./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-multidimensional/add-3-n-u.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b 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_91cd7e4b-1afd-4463-9e25-82997bbd152d/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91cd7e4b-1afd-4463-9e25-82997bbd152d/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91cd7e4b-1afd-4463-9e25-82997bbd152d/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91cd7e4b-1afd-4463-9e25-82997bbd152d/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-multidimensional/add-3-n-u.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91cd7e4b-1afd-4463-9e25-82997bbd152d/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91cd7e4b-1afd-4463-9e25-82997bbd152d/bin/utaipan-I9t0OCRTmS --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 efbd812580893a7521723358e51d4f43c4b930b57b026212f5a7d5f447f3e0f8 --- 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-8393723 [2022-11-19 08:05:51,139 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 08:05:51,141 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 08:05:51,161 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 08:05:51,162 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 08:05:51,163 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 08:05:51,165 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 08:05:51,167 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 08:05:51,169 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 08:05:51,170 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 08:05:51,171 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 08:05:51,173 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 08:05:51,173 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 08:05:51,174 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 08:05:51,176 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 08:05:51,177 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 08:05:51,178 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 08:05:51,179 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 08:05:51,181 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 08:05:51,186 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 08:05:51,187 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 08:05:51,189 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 08:05:51,190 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 08:05:51,191 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 08:05:51,195 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 08:05:51,196 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 08:05:51,196 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 08:05:51,197 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 08:05:51,198 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 08:05:51,199 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 08:05:51,199 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 08:05:51,200 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 08:05:51,201 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 08:05:51,202 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 08:05:51,203 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 08:05:51,204 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 08:05:51,205 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 08:05:51,205 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 08:05:51,206 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 08:05:51,207 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 08:05:51,208 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 08:05:51,209 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91cd7e4b-1afd-4463-9e25-82997bbd152d/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-19 08:05:51,232 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 08:05:51,232 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 08:05:51,233 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 08:05:51,233 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 08:05:51,234 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 08:05:51,234 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 08:05:51,244 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 08:05:51,244 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 08:05:51,245 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 08:05:51,245 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 08:05:51,245 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 08:05:51,245 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 08:05:51,246 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 08:05:51,246 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 08:05:51,246 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 08:05:51,247 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 08:05:51,247 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 08:05:51,247 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 08:05:51,248 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 08:05:51,249 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 08:05:51,249 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 08:05:51,249 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 08:05:51,249 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 08:05:51,250 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 08:05:51,250 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 08:05:51,250 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 08:05:51,251 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 08:05:51,251 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 08:05:51,251 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 08:05:51,251 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 08:05:51,252 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 08:05:51,252 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 08:05:51,252 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:05:51,253 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 08:05:51,253 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 08:05:51,253 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 08:05:51,253 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 08:05:51,254 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 08:05:51,254 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 08:05:51,254 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 08:05:51,254 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 08:05:51,255 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_91cd7e4b-1afd-4463-9e25-82997bbd152d/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91cd7e4b-1afd-4463-9e25-82997bbd152d/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> efbd812580893a7521723358e51d4f43c4b930b57b026212f5a7d5f447f3e0f8 [2022-11-19 08:05:51,520 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 08:05:51,543 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 08:05:51,546 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 08:05:51,547 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 08:05:51,549 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 08:05:51,550 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91cd7e4b-1afd-4463-9e25-82997bbd152d/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/array-multidimensional/add-3-n-u.c [2022-11-19 08:05:51,621 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91cd7e4b-1afd-4463-9e25-82997bbd152d/bin/utaipan-I9t0OCRTmS/data/7298d92e5/3b458a60d6f04dee93448854d764dea3/FLAG053ccaa25 [2022-11-19 08:05:52,061 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 08:05:52,062 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91cd7e4b-1afd-4463-9e25-82997bbd152d/sv-benchmarks/c/array-multidimensional/add-3-n-u.c [2022-11-19 08:05:52,068 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91cd7e4b-1afd-4463-9e25-82997bbd152d/bin/utaipan-I9t0OCRTmS/data/7298d92e5/3b458a60d6f04dee93448854d764dea3/FLAG053ccaa25 [2022-11-19 08:05:52,453 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91cd7e4b-1afd-4463-9e25-82997bbd152d/bin/utaipan-I9t0OCRTmS/data/7298d92e5/3b458a60d6f04dee93448854d764dea3 [2022-11-19 08:05:52,456 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 08:05:52,457 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 08:05:52,462 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 08:05:52,462 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 08:05:52,465 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 08:05:52,466 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:05:52" (1/1) ... [2022-11-19 08:05:52,467 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79facc2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:52, skipping insertion in model container [2022-11-19 08:05:52,468 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:05:52" (1/1) ... [2022-11-19 08:05:52,475 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 08:05:52,492 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 08:05:52,703 WARN L234 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_91cd7e4b-1afd-4463-9e25-82997bbd152d/sv-benchmarks/c/array-multidimensional/add-3-n-u.c[321,334] [2022-11-19 08:05:52,758 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:05:52,765 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 08:05:52,782 WARN L234 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_91cd7e4b-1afd-4463-9e25-82997bbd152d/sv-benchmarks/c/array-multidimensional/add-3-n-u.c[321,334] [2022-11-19 08:05:52,816 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:05:52,836 INFO L208 MainTranslator]: Completed translation [2022-11-19 08:05:52,836 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:52 WrapperNode [2022-11-19 08:05:52,837 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 08:05:52,838 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 08:05:52,838 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 08:05:52,838 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 08:05:52,845 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:52" (1/1) ... [2022-11-19 08:05:52,864 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:52" (1/1) ... [2022-11-19 08:05:52,896 INFO L138 Inliner]: procedures = 14, calls = 25, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 118 [2022-11-19 08:05:52,897 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 08:05:52,898 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 08:05:52,898 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 08:05:52,898 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 08:05:52,907 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:52" (1/1) ... [2022-11-19 08:05:52,907 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:52" (1/1) ... [2022-11-19 08:05:52,917 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:52" (1/1) ... [2022-11-19 08:05:52,917 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:52" (1/1) ... [2022-11-19 08:05:52,927 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:52" (1/1) ... [2022-11-19 08:05:52,932 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:52" (1/1) ... [2022-11-19 08:05:52,934 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:52" (1/1) ... [2022-11-19 08:05:52,946 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:52" (1/1) ... [2022-11-19 08:05:52,948 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 08:05:52,949 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 08:05:52,949 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 08:05:52,949 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 08:05:52,956 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:52" (1/1) ... [2022-11-19 08:05:52,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:05:52,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91cd7e4b-1afd-4463-9e25-82997bbd152d/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:05:52,984 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91cd7e4b-1afd-4463-9e25-82997bbd152d/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 08:05:53,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91cd7e4b-1afd-4463-9e25-82997bbd152d/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 08:05:53,025 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 08:05:53,025 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 08:05:53,025 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 08:05:53,025 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 08:05:53,026 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 08:05:53,026 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 08:05:53,026 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 08:05:53,026 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 08:05:53,099 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 08:05:53,100 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 08:05:53,278 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 08:05:53,339 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 08:05:53,339 INFO L300 CfgBuilder]: Removed 9 assume(true) statements. [2022-11-19 08:05:53,342 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:05:53 BoogieIcfgContainer [2022-11-19 08:05:53,342 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 08:05:53,344 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 08:05:53,344 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 08:05:53,348 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 08:05:53,348 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:05:52" (1/3) ... [2022-11-19 08:05:53,351 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cb94589 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:05:53, skipping insertion in model container [2022-11-19 08:05:53,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:52" (2/3) ... [2022-11-19 08:05:53,352 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cb94589 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:05:53, skipping insertion in model container [2022-11-19 08:05:53,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:05:53" (3/3) ... [2022-11-19 08:05:53,353 INFO L112 eAbstractionObserver]: Analyzing ICFG add-3-n-u.c [2022-11-19 08:05:53,374 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 08:05:53,374 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 08:05:53,447 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 08:05:53,455 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;@710ca208, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 08:05:53,456 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 08:05:53,460 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 14 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:05:53,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-19 08:05:53,467 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:05:53,467 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:05:53,468 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:05:53,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:05:53,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1242475547, now seen corresponding path program 1 times [2022-11-19 08:05:53,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:05:53,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19538855] [2022-11-19 08:05:53,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:05:53,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:05:53,564 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 08:05:53,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1157500197] [2022-11-19 08:05:53,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:05:53,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:05:53,565 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91cd7e4b-1afd-4463-9e25-82997bbd152d/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:05:53,577 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91cd7e4b-1afd-4463-9e25-82997bbd152d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:05:53,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91cd7e4b-1afd-4463-9e25-82997bbd152d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 08:05:53,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:05:53,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 08:05:53,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:05:53,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:05:53,827 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:05:53,828 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:05:53,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19538855] [2022-11-19 08:05:53,829 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 08:05:53,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1157500197] [2022-11-19 08:05:53,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1157500197] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:05:53,831 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:05:53,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 08:05:53,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236475088] [2022-11-19 08:05:53,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:05:53,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:05:53,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:05:53,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:05:53,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:05:53,888 INFO L87 Difference]: Start difference. First operand has 15 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 14 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:05:53,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:05:53,957 INFO L93 Difference]: Finished difference Result 29 states and 47 transitions. [2022-11-19 08:05:53,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:05:53,964 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-19 08:05:53,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:05:53,972 INFO L225 Difference]: With dead ends: 29 [2022-11-19 08:05:53,972 INFO L226 Difference]: Without dead ends: 17 [2022-11-19 08:05:53,975 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:05:53,978 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 08:05:53,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 18 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 08:05:53,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-11-19 08:05:54,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2022-11-19 08:05:54,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 14 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:05:54,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 23 transitions. [2022-11-19 08:05:54,020 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 23 transitions. Word has length 8 [2022-11-19 08:05:54,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:05:54,021 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 23 transitions. [2022-11-19 08:05:54,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:05:54,021 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 23 transitions. [2022-11-19 08:05:54,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-19 08:05:54,022 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:05:54,022 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:05:54,034 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91cd7e4b-1afd-4463-9e25-82997bbd152d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-19 08:05:54,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91cd7e4b-1afd-4463-9e25-82997bbd152d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:05:54,235 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:05:54,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:05:54,236 INFO L85 PathProgramCache]: Analyzing trace with hash 103004432, now seen corresponding path program 1 times [2022-11-19 08:05:54,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:05:54,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324455238] [2022-11-19 08:05:54,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:05:54,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:05:54,269 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 08:05:54,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [654308422] [2022-11-19 08:05:54,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:05:54,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:05:54,270 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91cd7e4b-1afd-4463-9e25-82997bbd152d/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:05:54,280 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91cd7e4b-1afd-4463-9e25-82997bbd152d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:05:54,288 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91cd7e4b-1afd-4463-9e25-82997bbd152d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-19 08:05:54,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:05:54,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 08:05:54,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:05:54,435 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:05:54,436 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:05:54,437 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:05:54,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324455238] [2022-11-19 08:05:54,438 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 08:05:54,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [654308422] [2022-11-19 08:05:54,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [654308422] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:05:54,440 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:05:54,440 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:05:54,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533474898] [2022-11-19 08:05:54,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:05:54,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 08:05:54,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:05:54,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 08:05:54,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-19 08:05:54,445 INFO L87 Difference]: Start difference. First operand 15 states and 23 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:05:54,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:05:54,542 INFO L93 Difference]: Finished difference Result 40 states and 63 transitions. [2022-11-19 08:05:54,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 08:05:54,543 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-19 08:05:54,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:05:54,546 INFO L225 Difference]: With dead ends: 40 [2022-11-19 08:05:54,546 INFO L226 Difference]: Without dead ends: 27 [2022-11-19 08:05:54,547 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-19 08:05:54,551 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 48 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:05:54,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 11 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:05:54,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-11-19 08:05:54,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 18. [2022-11-19 08:05:54,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 17 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:05:54,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 26 transitions. [2022-11-19 08:05:54,566 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 26 transitions. Word has length 10 [2022-11-19 08:05:54,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:05:54,567 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 26 transitions. [2022-11-19 08:05:54,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:05:54,568 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 26 transitions. [2022-11-19 08:05:54,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-19 08:05:54,569 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:05:54,569 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:05:54,583 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91cd7e4b-1afd-4463-9e25-82997bbd152d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-19 08:05:54,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91cd7e4b-1afd-4463-9e25-82997bbd152d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-11-19 08:05:54,776 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:05:54,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:05:54,777 INFO L85 PathProgramCache]: Analyzing trace with hash -1848574842, now seen corresponding path program 1 times [2022-11-19 08:05:54,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:05:54,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929098612] [2022-11-19 08:05:54,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:05:54,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:05:54,798 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 08:05:54,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1879253024] [2022-11-19 08:05:54,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:05:54,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:05:54,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91cd7e4b-1afd-4463-9e25-82997bbd152d/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:05:54,807 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91cd7e4b-1afd-4463-9e25-82997bbd152d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:05:54,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91cd7e4b-1afd-4463-9e25-82997bbd152d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-19 08:05:54,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:05:54,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 08:05:54,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:05:54,946 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:05:54,947 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:05:54,947 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:05:54,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929098612] [2022-11-19 08:05:54,948 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 08:05:54,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1879253024] [2022-11-19 08:05:54,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1879253024] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:05:54,948 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:05:54,949 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:05:54,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860064920] [2022-11-19 08:05:54,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:05:54,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 08:05:54,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:05:54,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 08:05:54,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-19 08:05:54,951 INFO L87 Difference]: Start difference. First operand 18 states and 26 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:05:55,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:05:55,029 INFO L93 Difference]: Finished difference Result 43 states and 63 transitions. [2022-11-19 08:05:55,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 08:05:55,030 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-19 08:05:55,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:05:55,031 INFO L225 Difference]: With dead ends: 43 [2022-11-19 08:05:55,031 INFO L226 Difference]: Without dead ends: 27 [2022-11-19 08:05:55,032 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-19 08:05:55,033 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 22 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:05:55,033 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 12 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:05:55,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-11-19 08:05:55,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 21. [2022-11-19 08:05:55,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.45) internal successors, (29), 20 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) [2022-11-19 08:05:55,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 29 transitions. [2022-11-19 08:05:55,042 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 29 transitions. Word has length 12 [2022-11-19 08:05:55,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:05:55,042 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 29 transitions. [2022-11-19 08:05:55,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:05:55,043 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 29 transitions. [2022-11-19 08:05:55,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-19 08:05:55,043 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:05:55,043 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:05:55,054 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91cd7e4b-1afd-4463-9e25-82997bbd152d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-19 08:05:55,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91cd7e4b-1afd-4463-9e25-82997bbd152d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:05:55,249 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:05:55,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:05:55,250 INFO L85 PathProgramCache]: Analyzing trace with hash 2114319717, now seen corresponding path program 1 times [2022-11-19 08:05:55,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:05:55,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887669236] [2022-11-19 08:05:55,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:05:55,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:05:55,261 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 08:05:55,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1320076414] [2022-11-19 08:05:55,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:05:55,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:05:55,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91cd7e4b-1afd-4463-9e25-82997bbd152d/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:05:55,267 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91cd7e4b-1afd-4463-9e25-82997bbd152d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:05:55,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91cd7e4b-1afd-4463-9e25-82997bbd152d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-19 08:05:55,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:05:55,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 08:05:55,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:05:55,378 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:05:55,379 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:05:55,407 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:05:55,407 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:05:55,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887669236] [2022-11-19 08:05:55,408 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 08:05:55,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1320076414] [2022-11-19 08:05:55,408 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1320076414] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:05:55,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [32826426] [2022-11-19 08:05:55,435 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2022-11-19 08:05:55,435 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 08:05:55,439 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 08:05:55,444 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 08:05:55,446 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 08:05:55,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:05:55,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:05:55,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:05:55,656 INFO L321 Elim1Store]: treesize reduction 185, result has 22.9 percent of original size [2022-11-19 08:05:55,657 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 9 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 49 treesize of output 81 [2022-11-19 08:05:55,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:05:55,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:05:55,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:05:55,936 INFO L321 Elim1Store]: treesize reduction 190, result has 19.1 percent of original size [2022-11-19 08:05:55,937 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 12 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 15 case distinctions, treesize of input 60 treesize of output 93 [2022-11-19 08:05:56,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:05:56,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:05:56,182 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 93 treesize of output 69 [2022-11-19 08:05:56,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:05:56,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:05:56,466 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:05:56,505 INFO L321 Elim1Store]: treesize reduction 162, result has 16.5 percent of original size [2022-11-19 08:05:56,505 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 480 treesize of output 448 [2022-11-19 08:05:56,705 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:05:56,721 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-19 08:05:56,722 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 78 treesize of output 53 [2022-11-19 08:05:56,942 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:05:56,958 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-19 08:05:56,959 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 78 treesize of output 53 [2022-11-19 08:05:57,024 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:05:57,040 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-19 08:05:57,040 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 78 treesize of output 53 [2022-11-19 08:05:57,092 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:05:57,111 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-19 08:05:57,111 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 78 treesize of output 53 [2022-11-19 08:05:57,236 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:05:57,256 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-19 08:05:57,257 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 78 treesize of output 53 [2022-11-19 08:05:57,295 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:05:57,313 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-19 08:05:57,313 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 78 treesize of output 53 [2022-11-19 08:05:57,466 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:05:57,481 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-19 08:05:57,482 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 78 treesize of output 53 [2022-11-19 08:05:57,520 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:05:57,537 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-19 08:05:57,537 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 78 treesize of output 53 [2022-11-19 08:05:57,545 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 08:05:57,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [32826426] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:05:57,791 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-19 08:05:57,791 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 10 [2022-11-19 08:05:57,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455851351] [2022-11-19 08:05:57,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:05:57,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 08:05:57,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:05:57,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 08:05:57,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2022-11-19 08:05:57,794 INFO L87 Difference]: Start difference. First operand 21 states and 29 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:05:57,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:05:57,923 INFO L93 Difference]: Finished difference Result 42 states and 53 transitions. [2022-11-19 08:05:57,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 08:05:57,925 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-19 08:05:57,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:05:57,927 INFO L225 Difference]: With dead ends: 42 [2022-11-19 08:05:57,927 INFO L226 Difference]: Without dead ends: 33 [2022-11-19 08:05:57,928 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2022-11-19 08:05:57,932 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 12 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:05:57,935 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 6 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:05:57,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-11-19 08:05:57,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 22. [2022-11-19 08:05:57,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 21 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:05:57,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 30 transitions. [2022-11-19 08:05:57,955 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 30 transitions. Word has length 13 [2022-11-19 08:05:57,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:05:57,955 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 30 transitions. [2022-11-19 08:05:57,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:05:57,956 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 30 transitions. [2022-11-19 08:05:57,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-19 08:05:57,958 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:05:57,958 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:05:57,968 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91cd7e4b-1afd-4463-9e25-82997bbd152d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-19 08:05:58,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91cd7e4b-1afd-4463-9e25-82997bbd152d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:05:58,163 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:05:58,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:05:58,163 INFO L85 PathProgramCache]: Analyzing trace with hash -475134270, now seen corresponding path program 1 times [2022-11-19 08:05:58,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:05:58,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441127285] [2022-11-19 08:05:58,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:05:58,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:05:58,176 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 08:05:58,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1251033292] [2022-11-19 08:05:58,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:05:58,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:05:58,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91cd7e4b-1afd-4463-9e25-82997bbd152d/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:05:58,180 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91cd7e4b-1afd-4463-9e25-82997bbd152d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:05:58,202 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91cd7e4b-1afd-4463-9e25-82997bbd152d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-19 08:05:58,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:05:58,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 08:05:58,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:05:58,295 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-19 08:05:58,295 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:05:58,324 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-19 08:05:58,324 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:05:58,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441127285] [2022-11-19 08:05:58,324 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 08:05:58,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1251033292] [2022-11-19 08:05:58,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1251033292] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:05:58,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2048252407] [2022-11-19 08:05:58,330 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-11-19 08:05:58,330 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 08:05:58,331 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 08:05:58,332 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 08:05:58,332 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 08:05:58,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:05:58,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:05:58,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:05:58,507 INFO L321 Elim1Store]: treesize reduction 190, result has 19.1 percent of original size [2022-11-19 08:05:58,507 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 12 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 15 case distinctions, treesize of input 60 treesize of output 93 [2022-11-19 08:05:58,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:05:58,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:05:58,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:05:58,540 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 18 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 61 [2022-11-19 08:05:58,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:05:58,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:05:58,613 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 61 [2022-11-19 08:05:58,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:05:58,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:05:58,776 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:05:58,809 INFO L321 Elim1Store]: treesize reduction 162, result has 16.5 percent of original size [2022-11-19 08:05:58,810 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 480 treesize of output 448 [2022-11-19 08:05:58,919 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:05:58,933 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-19 08:05:58,935 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 78 treesize of output 53 [2022-11-19 08:05:59,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:05:59,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:05:59,123 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:05:59,166 INFO L321 Elim1Store]: treesize reduction 158, result has 18.6 percent of original size [2022-11-19 08:05:59,167 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 305 treesize of output 285 [2022-11-19 08:05:59,256 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:05:59,271 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-19 08:05:59,272 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 78 treesize of output 53 [2022-11-19 08:05:59,343 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:05:59,372 INFO L321 Elim1Store]: treesize reduction 26, result has 48.0 percent of original size [2022-11-19 08:05:59,372 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 66 treesize of output 45 [2022-11-19 08:05:59,421 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:05:59,438 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-19 08:05:59,439 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 78 treesize of output 53 [2022-11-19 08:05:59,551 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:05:59,565 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-19 08:05:59,565 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 78 treesize of output 53 [2022-11-19 08:05:59,615 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:05:59,630 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-19 08:05:59,630 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 78 treesize of output 53 [2022-11-19 08:05:59,688 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:05:59,703 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-19 08:05:59,703 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 78 treesize of output 53 [2022-11-19 08:05:59,753 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:05:59,767 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-19 08:05:59,768 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 78 treesize of output 53 [2022-11-19 08:05:59,815 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:05:59,831 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-19 08:05:59,832 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 78 treesize of output 53 [2022-11-19 08:05:59,879 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:05:59,894 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-19 08:05:59,894 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 78 treesize of output 53 [2022-11-19 08:05:59,997 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:06:00,011 INFO L321 Elim1Store]: treesize reduction 26, result has 48.0 percent of original size [2022-11-19 08:06:00,011 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 66 treesize of output 45 [2022-11-19 08:06:00,039 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:06:00,054 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-19 08:06:00,054 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 78 treesize of output 53 [2022-11-19 08:06:00,137 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:06:00,152 INFO L321 Elim1Store]: treesize reduction 26, result has 48.0 percent of original size [2022-11-19 08:06:00,152 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 66 treesize of output 45 [2022-11-19 08:06:00,202 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:06:00,216 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-19 08:06:00,217 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 78 treesize of output 53 [2022-11-19 08:06:00,249 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:06:00,263 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-19 08:06:00,264 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 78 treesize of output 53 [2022-11-19 08:06:00,350 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:06:00,351 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:06:00,392 INFO L321 Elim1Store]: treesize reduction 54, result has 51.4 percent of original size [2022-11-19 08:06:00,393 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 60 treesize of output 79 [2022-11-19 08:06:00,456 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:06:00,457 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:06:00,503 INFO L321 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2022-11-19 08:06:00,503 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 91 [2022-11-19 08:06:00,725 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:06:00,726 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:06:00,771 INFO L321 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2022-11-19 08:06:00,772 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 91 [2022-11-19 08:06:00,833 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:06:00,834 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:06:00,877 INFO L321 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2022-11-19 08:06:00,878 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 91 [2022-11-19 08:06:01,004 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:06:01,005 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:06:01,051 INFO L321 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2022-11-19 08:06:01,051 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 91 [2022-11-19 08:06:01,134 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:06:01,135 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:06:01,180 INFO L321 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2022-11-19 08:06:01,181 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 91 [2022-11-19 08:06:01,302 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:06:01,303 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:06:01,347 INFO L321 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2022-11-19 08:06:01,347 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 91 [2022-11-19 08:06:01,426 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:06:01,427 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:06:01,476 INFO L321 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2022-11-19 08:06:01,476 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 91 [2022-11-19 08:06:01,645 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:06:01,646 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:06:01,689 INFO L321 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2022-11-19 08:06:01,689 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 91 [2022-11-19 08:06:01,758 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:06:01,760 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:06:01,804 INFO L321 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2022-11-19 08:06:01,804 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 91 [2022-11-19 08:06:01,893 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:06:01,907 INFO L321 Elim1Store]: treesize reduction 26, result has 48.0 percent of original size [2022-11-19 08:06:01,907 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 66 treesize of output 45 [2022-11-19 08:06:01,947 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:06:01,961 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-19 08:06:01,962 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 78 treesize of output 53 [2022-11-19 08:06:02,026 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:06:02,039 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-19 08:06:02,040 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 78 treesize of output 53 [2022-11-19 08:06:02,084 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:06:02,098 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-19 08:06:02,099 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 78 treesize of output 53 [2022-11-19 08:06:02,124 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:06:02,138 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-19 08:06:02,139 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-19 08:06:02,195 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:06:02,209 INFO L321 Elim1Store]: treesize reduction 26, result has 48.0 percent of original size [2022-11-19 08:06:02,209 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 66 treesize of output 45 [2022-11-19 08:06:02,255 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:06:02,270 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-19 08:06:02,270 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 78 treesize of output 53 [2022-11-19 08:06:02,308 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:06:02,323 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-19 08:06:02,324 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 78 treesize of output 53 [2022-11-19 08:06:02,331 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 08:06:03,306 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '708#(and (= |ULTIMATE.start_main_~i~0#1| 0) (= |ULTIMATE.start_main_~m~0#1| 1000) (= |ULTIMATE.start_main_~#C~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#A~0#1.base|) (= (select (select |#memory_int| |ULTIMATE.start_main_~#C~0#1.base|) (+ (* |ULTIMATE.start_main_~k~0#1| 4) (* |ULTIMATE.start_main_~j~0#1| (* |ULTIMATE.start_main_~p~0#1| 4)) |ULTIMATE.start_main_~#C~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| (* |ULTIMATE.start_main_~n~0#1| (* |ULTIMATE.start_main_~p~0#1| 4))))) |ULTIMATE.start_main_#t~mem10#1|) (= |ULTIMATE.start_main_#t~mem9#1| (select (select |#memory_int| |ULTIMATE.start_main_~#B~0#1.base|) (+ (* |ULTIMATE.start_main_~k~0#1| 4) (* |ULTIMATE.start_main_~j~0#1| (* |ULTIMATE.start_main_~p~0#1| 4)) |ULTIMATE.start_main_~#B~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| (* |ULTIMATE.start_main_~n~0#1| (* |ULTIMATE.start_main_~p~0#1| 4)))))) (= (ite (= (mod |ULTIMATE.start_main_#t~mem10#1| 4294967296) (mod (+ |ULTIMATE.start_main_#t~mem9#1| |ULTIMATE.start_main_#t~mem8#1|) 4294967296)) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= |ULTIMATE.start_main_~k~0#1| 0) (= |ULTIMATE.start_main_~p~0#1| 1800) (= |ULTIMATE.start_main_~#A~0#1.offset| 0) (= (select (select |#memory_int| |ULTIMATE.start_main_~#A~0#1.base|) (+ (* |ULTIMATE.start_main_~k~0#1| 4) (* |ULTIMATE.start_main_~j~0#1| (* |ULTIMATE.start_main_~p~0#1| 4)) |ULTIMATE.start_main_~#A~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| (* |ULTIMATE.start_main_~n~0#1| (* |ULTIMATE.start_main_~p~0#1| 4))))) |ULTIMATE.start_main_#t~mem8#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#B~0#1.base|) (= |ULTIMATE.start_main_~j~0#1| 0) (= |ULTIMATE.start_main_~#B~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#C~0#1.base|) (<= 0 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~n~0#1| 1500) (= |#NULL.base| 0))' at error location [2022-11-19 08:06:03,306 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 08:06:03,306 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-19 08:06:03,307 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2022-11-19 08:06:03,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942168981] [2022-11-19 08:06:03,307 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-19 08:06:03,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-19 08:06:03,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:06:03,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-19 08:06:03,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2022-11-19 08:06:03,308 INFO L87 Difference]: Start difference. First operand 22 states and 30 transitions. Second operand has 8 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:06:03,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:06:03,450 INFO L93 Difference]: Finished difference Result 64 states and 89 transitions. [2022-11-19 08:06:03,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 08:06:03,451 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 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 18 [2022-11-19 08:06:03,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:06:03,451 INFO L225 Difference]: With dead ends: 64 [2022-11-19 08:06:03,451 INFO L226 Difference]: Without dead ends: 44 [2022-11-19 08:06:03,452 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 33 SyntacticMatches, 6 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=106, Invalid=166, Unknown=0, NotChecked=0, Total=272 [2022-11-19 08:06:03,453 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 51 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:06:03,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 18 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:06:03,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-11-19 08:06:03,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 37. [2022-11-19 08:06:03,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.3333333333333333) internal successors, (48), 36 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:06:03,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 48 transitions. [2022-11-19 08:06:03,472 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 48 transitions. Word has length 18 [2022-11-19 08:06:03,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:06:03,473 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 48 transitions. [2022-11-19 08:06:03,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:06:03,473 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 48 transitions. [2022-11-19 08:06:03,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-19 08:06:03,474 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:06:03,474 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:06:03,487 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91cd7e4b-1afd-4463-9e25-82997bbd152d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-19 08:06:03,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91cd7e4b-1afd-4463-9e25-82997bbd152d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:06:03,688 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:06:03,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:06:03,688 INFO L85 PathProgramCache]: Analyzing trace with hash 795485591, now seen corresponding path program 2 times [2022-11-19 08:06:03,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:06:03,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839887455] [2022-11-19 08:06:03,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:06:03,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:06:03,703 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 08:06:03,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1414636811] [2022-11-19 08:06:03,704 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 08:06:03,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:06:03,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91cd7e4b-1afd-4463-9e25-82997bbd152d/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:06:03,705 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91cd7e4b-1afd-4463-9e25-82997bbd152d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:06:03,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91cd7e4b-1afd-4463-9e25-82997bbd152d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-19 08:06:03,798 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-19 08:06:03,798 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 08:06:03,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 08:06:03,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:06:03,864 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-19 08:06:03,864 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:06:03,912 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-19 08:06:03,912 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:06:03,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839887455] [2022-11-19 08:06:03,913 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 08:06:03,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1414636811] [2022-11-19 08:06:03,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1414636811] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:06:03,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2106639888] [2022-11-19 08:06:03,917 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-11-19 08:06:03,917 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 08:06:03,917 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 08:06:03,918 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 08:06:03,918 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 08:06:03,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:03,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:03,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:04,068 INFO L321 Elim1Store]: treesize reduction 190, result has 19.1 percent of original size [2022-11-19 08:06:04,068 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 12 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 15 case distinctions, treesize of input 60 treesize of output 93 [2022-11-19 08:06:04,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:04,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:04,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:04,108 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 18 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 61 [2022-11-19 08:06:04,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:04,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:04,188 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 93 treesize of output 69 [2022-11-19 08:06:04,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:04,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:06:04,332 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:06:04,362 INFO L321 Elim1Store]: treesize reduction 162, result has 16.5 percent of original size [2022-11-19 08:06:04,363 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 480 treesize of output 448 [2022-11-19 08:06:04,477 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:06:04,491 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-19 08:06:04,491 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 78 treesize of output 53 [2022-11-19 08:06:04,592 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:06:04,605 INFO L321 Elim1Store]: treesize reduction 26, result has 48.0 percent of original size [2022-11-19 08:06:04,605 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 66 treesize of output 45 [2022-11-19 08:06:04,639 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:06:04,652 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-19 08:06:04,653 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-19 08:06:04,776 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:06:04,790 INFO L321 Elim1Store]: treesize reduction 26, result has 48.0 percent of original size [2022-11-19 08:06:04,790 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 66 treesize of output 45 [2022-11-19 08:06:04,839 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:06:04,853 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-19 08:06:04,854 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 78 treesize of output 53 [2022-11-19 08:06:04,895 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:06:04,909 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-19 08:06:04,909 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 78 treesize of output 53 [2022-11-19 08:06:04,975 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:06:04,989 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-19 08:06:04,989 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 78 treesize of output 53 [2022-11-19 08:06:05,033 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:06:05,047 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-19 08:06:05,047 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 78 treesize of output 53 [2022-11-19 08:06:05,084 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:06:05,097 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-19 08:06:05,098 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 78 treesize of output 53 [2022-11-19 08:06:05,175 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:06:05,176 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:06:05,215 INFO L321 Elim1Store]: treesize reduction 54, result has 51.4 percent of original size [2022-11-19 08:06:05,215 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 60 treesize of output 79 [2022-11-19 08:06:05,274 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:06:05,275 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:06:05,312 INFO L321 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2022-11-19 08:06:05,313 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 91 [2022-11-19 08:06:05,448 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:06:05,449 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:06:05,489 INFO L321 Elim1Store]: treesize reduction 54, result has 51.4 percent of original size [2022-11-19 08:06:05,490 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 60 treesize of output 79 [2022-11-19 08:06:05,557 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:06:05,558 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:06:05,602 INFO L321 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2022-11-19 08:06:05,603 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 91 [2022-11-19 08:06:05,720 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:06:05,721 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:06:05,757 INFO L321 Elim1Store]: treesize reduction 54, result has 51.4 percent of original size [2022-11-19 08:06:05,758 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 60 treesize of output 79 [2022-11-19 08:06:05,835 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:06:05,836 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:06:05,880 INFO L321 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2022-11-19 08:06:05,881 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 91 [2022-11-19 08:06:05,990 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:06:05,991 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:06:06,029 INFO L321 Elim1Store]: treesize reduction 54, result has 51.4 percent of original size [2022-11-19 08:06:06,029 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 60 treesize of output 79 [2022-11-19 08:06:06,080 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:06:06,081 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:06:06,120 INFO L321 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2022-11-19 08:06:06,121 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 91 [2022-11-19 08:06:06,287 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:06:06,288 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:06:06,328 INFO L321 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2022-11-19 08:06:06,329 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 91 [2022-11-19 08:06:06,405 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:06:06,406 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:06:06,452 INFO L321 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2022-11-19 08:06:06,452 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 91 [2022-11-19 08:06:06,548 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:06:06,561 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-19 08:06:06,562 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 78 treesize of output 53 [2022-11-19 08:06:06,585 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:06:06,599 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-19 08:06:06,600 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 78 treesize of output 53 [2022-11-19 08:06:06,681 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:06:06,695 INFO L321 Elim1Store]: treesize reduction 26, result has 48.0 percent of original size [2022-11-19 08:06:06,695 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 66 treesize of output 45 [2022-11-19 08:06:06,728 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:06:06,742 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-19 08:06:06,742 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 78 treesize of output 53 [2022-11-19 08:06:06,773 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:06:06,786 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-19 08:06:06,786 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 78 treesize of output 53 [2022-11-19 08:06:06,852 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:06:06,865 INFO L321 Elim1Store]: treesize reduction 26, result has 48.0 percent of original size [2022-11-19 08:06:06,865 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 66 treesize of output 45 [2022-11-19 08:06:06,904 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:06:06,918 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-19 08:06:06,918 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 78 treesize of output 53 [2022-11-19 08:06:06,941 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:06:06,954 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-19 08:06:06,955 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 78 treesize of output 53 [2022-11-19 08:06:06,960 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 08:06:07,831 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1044#(and (= |ULTIMATE.start_main_~i~0#1| 0) (= |ULTIMATE.start_main_~m~0#1| 1000) (= |ULTIMATE.start_main_~#C~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#A~0#1.base|) (= (select (select |#memory_int| |ULTIMATE.start_main_~#C~0#1.base|) (+ (* |ULTIMATE.start_main_~k~0#1| 4) (* |ULTIMATE.start_main_~j~0#1| (* |ULTIMATE.start_main_~p~0#1| 4)) |ULTIMATE.start_main_~#C~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| (* |ULTIMATE.start_main_~n~0#1| (* |ULTIMATE.start_main_~p~0#1| 4))))) |ULTIMATE.start_main_#t~mem10#1|) (= |ULTIMATE.start_main_#t~mem9#1| (select (select |#memory_int| |ULTIMATE.start_main_~#B~0#1.base|) (+ (* |ULTIMATE.start_main_~k~0#1| 4) (* |ULTIMATE.start_main_~j~0#1| (* |ULTIMATE.start_main_~p~0#1| 4)) |ULTIMATE.start_main_~#B~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| (* |ULTIMATE.start_main_~n~0#1| (* |ULTIMATE.start_main_~p~0#1| 4)))))) (= (ite (= (mod |ULTIMATE.start_main_#t~mem10#1| 4294967296) (mod (+ |ULTIMATE.start_main_#t~mem9#1| |ULTIMATE.start_main_#t~mem8#1|) 4294967296)) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= |ULTIMATE.start_main_~k~0#1| 0) (= |ULTIMATE.start_main_~p~0#1| 1800) (= |ULTIMATE.start_main_~#A~0#1.offset| 0) (= (select (select |#memory_int| |ULTIMATE.start_main_~#A~0#1.base|) (+ (* |ULTIMATE.start_main_~k~0#1| 4) (* |ULTIMATE.start_main_~j~0#1| (* |ULTIMATE.start_main_~p~0#1| 4)) |ULTIMATE.start_main_~#A~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| (* |ULTIMATE.start_main_~n~0#1| (* |ULTIMATE.start_main_~p~0#1| 4))))) |ULTIMATE.start_main_#t~mem8#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#B~0#1.base|) (= |ULTIMATE.start_main_~j~0#1| 0) (= |ULTIMATE.start_main_~#B~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#C~0#1.base|) (<= 0 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~n~0#1| 1500) (= |#NULL.base| 0))' at error location [2022-11-19 08:06:07,831 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 08:06:07,831 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-19 08:06:07,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2022-11-19 08:06:07,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867843343] [2022-11-19 08:06:07,832 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-19 08:06:07,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-19 08:06:07,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:06:07,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-19 08:06:07,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2022-11-19 08:06:07,833 INFO L87 Difference]: Start difference. First operand 37 states and 48 transitions. Second operand has 8 states, 8 states have (on average 3.875) internal successors, (31), 7 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:06:08,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:06:08,004 INFO L93 Difference]: Finished difference Result 167 states and 219 transitions. [2022-11-19 08:06:08,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 08:06:08,005 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.875) internal successors, (31), 7 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-11-19 08:06:08,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:06:08,007 INFO L225 Difference]: With dead ends: 167 [2022-11-19 08:06:08,007 INFO L226 Difference]: Without dead ends: 140 [2022-11-19 08:06:08,008 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 51 SyntacticMatches, 6 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=106, Invalid=166, Unknown=0, NotChecked=0, Total=272 [2022-11-19 08:06:08,008 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 109 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:06:08,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 28 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:06:08,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2022-11-19 08:06:08,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 85. [2022-11-19 08:06:08,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 84 states have (on average 1.2857142857142858) internal successors, (108), 84 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:06:08,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 108 transitions. [2022-11-19 08:06:08,042 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 108 transitions. Word has length 24 [2022-11-19 08:06:08,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:06:08,042 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 108 transitions. [2022-11-19 08:06:08,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.875) internal successors, (31), 7 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:06:08,043 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 108 transitions. [2022-11-19 08:06:08,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-19 08:06:08,044 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:06:08,045 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:06:08,061 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91cd7e4b-1afd-4463-9e25-82997bbd152d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-19 08:06:08,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91cd7e4b-1afd-4463-9e25-82997bbd152d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-19 08:06:08,250 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:06:08,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:06:08,251 INFO L85 PathProgramCache]: Analyzing trace with hash 2031543819, now seen corresponding path program 3 times [2022-11-19 08:06:08,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:06:08,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224713222] [2022-11-19 08:06:08,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:06:08,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:06:08,292 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 08:06:08,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1010175446] [2022-11-19 08:06:08,293 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-19 08:06:08,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:06:08,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91cd7e4b-1afd-4463-9e25-82997bbd152d/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:06:08,294 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91cd7e4b-1afd-4463-9e25-82997bbd152d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:06:08,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91cd7e4b-1afd-4463-9e25-82997bbd152d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-19 08:19:17,248 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-19 08:19:17,248 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 08:19:17,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 543 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 08:19:17,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:19:17,423 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 151 proven. 1 refuted. 0 times theorem prover too weak. 304 trivial. 0 not checked. [2022-11-19 08:19:17,423 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:19:17,472 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 122 proven. 30 refuted. 0 times theorem prover too weak. 304 trivial. 0 not checked. [2022-11-19 08:19:17,473 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:19:17,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224713222] [2022-11-19 08:19:17,473 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 08:19:17,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1010175446] [2022-11-19 08:19:17,473 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1010175446] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:19:17,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1815739261] [2022-11-19 08:19:17,476 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-11-19 08:19:17,476 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 08:19:17,476 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 08:19:17,477 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 08:19:17,477 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 08:19:17,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:19:17,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:19:17,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:19:17,618 INFO L321 Elim1Store]: treesize reduction 190, result has 19.1 percent of original size [2022-11-19 08:19:17,618 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 12 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 15 case distinctions, treesize of input 60 treesize of output 93 [2022-11-19 08:19:17,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:19:17,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:19:17,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:19:17,643 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 18 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 61 [2022-11-19 08:19:17,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:19:17,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:19:17,710 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 93 treesize of output 69 [2022-11-19 08:19:17,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:19:17,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:19:17,843 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:19:17,876 INFO L321 Elim1Store]: treesize reduction 162, result has 16.5 percent of original size [2022-11-19 08:19:17,877 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 480 treesize of output 448 [2022-11-19 08:19:17,991 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:19:18,006 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-19 08:19:18,007 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 78 treesize of output 53 [2022-11-19 08:19:18,115 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:19:18,129 INFO L321 Elim1Store]: treesize reduction 26, result has 48.0 percent of original size [2022-11-19 08:19:18,129 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 45 [2022-11-19 08:19:18,160 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:19:18,174 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-19 08:19:18,174 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 78 treesize of output 53 [2022-11-19 08:19:18,277 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:19:18,290 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-19 08:19:18,291 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 78 treesize of output 53 [2022-11-19 08:19:18,324 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:19:18,341 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-19 08:19:18,342 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 78 treesize of output 53 [2022-11-19 08:19:18,406 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:19:18,434 INFO L321 Elim1Store]: treesize reduction 26, result has 48.0 percent of original size [2022-11-19 08:19:18,434 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 66 treesize of output 45 [2022-11-19 08:19:18,478 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:19:18,492 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-19 08:19:18,492 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 78 treesize of output 53 [2022-11-19 08:19:18,523 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:19:18,536 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-19 08:19:18,537 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 78 treesize of output 53 [2022-11-19 08:19:18,614 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:19:18,627 INFO L321 Elim1Store]: treesize reduction 26, result has 48.0 percent of original size [2022-11-19 08:19:18,627 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 66 treesize of output 45 [2022-11-19 08:19:18,683 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:19:18,696 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-19 08:19:18,697 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 78 treesize of output 53 [2022-11-19 08:19:18,729 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:19:18,742 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-19 08:19:18,742 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 78 treesize of output 53 [2022-11-19 08:19:18,798 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:19:18,811 INFO L321 Elim1Store]: treesize reduction 26, result has 48.0 percent of original size [2022-11-19 08:19:18,812 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 66 treesize of output 45 [2022-11-19 08:19:18,856 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:19:18,869 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-19 08:19:18,870 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 78 treesize of output 53 [2022-11-19 08:19:18,893 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:19:18,907 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-19 08:19:18,908 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 78 treesize of output 53 [2022-11-19 08:19:18,965 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:19:18,979 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-19 08:19:18,979 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 78 treesize of output 53 [2022-11-19 08:19:19,016 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:19:19,029 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-19 08:19:19,030 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 78 treesize of output 53 [2022-11-19 08:19:19,064 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:19:19,078 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-19 08:19:19,079 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 78 treesize of output 53 [2022-11-19 08:19:19,137 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:19:19,138 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:19:19,179 INFO L321 Elim1Store]: treesize reduction 54, result has 51.4 percent of original size [2022-11-19 08:19:19,180 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 60 treesize of output 79 [2022-11-19 08:19:19,241 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:19:19,242 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:19:19,281 INFO L321 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2022-11-19 08:19:19,282 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 91 [2022-11-19 08:19:19,446 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:19:19,446 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:19:19,483 INFO L321 Elim1Store]: treesize reduction 54, result has 51.4 percent of original size [2022-11-19 08:19:19,484 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 60 treesize of output 79 [2022-11-19 08:19:19,540 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:19:19,541 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:19:19,592 INFO L321 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2022-11-19 08:19:19,593 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 91 [2022-11-19 08:19:19,693 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:19:19,694 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:19:19,738 INFO L321 Elim1Store]: treesize reduction 54, result has 51.4 percent of original size [2022-11-19 08:19:19,739 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 60 treesize of output 79 [2022-11-19 08:19:19,790 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:19:19,791 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:19:19,833 INFO L321 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2022-11-19 08:19:19,834 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 91 [2022-11-19 08:19:19,920 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:19:19,921 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:19:19,971 INFO L321 Elim1Store]: treesize reduction 54, result has 51.4 percent of original size [2022-11-19 08:19:19,971 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 60 treesize of output 79 [2022-11-19 08:19:20,020 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:19:20,021 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:19:20,064 INFO L321 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2022-11-19 08:19:20,064 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 91 [2022-11-19 08:19:20,202 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:19:20,202 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:19:20,238 INFO L321 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2022-11-19 08:19:20,239 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 91 [2022-11-19 08:19:20,300 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:19:20,301 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:19:20,338 INFO L321 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2022-11-19 08:19:20,338 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 91 [2022-11-19 08:19:20,357 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 08:19:21,342 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1955#(and (= |ULTIMATE.start_main_~i~0#1| 0) (= |ULTIMATE.start_main_~m~0#1| 1000) (= |ULTIMATE.start_main_~#C~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#A~0#1.base|) (= (select (select |#memory_int| |ULTIMATE.start_main_~#C~0#1.base|) (+ (* |ULTIMATE.start_main_~k~0#1| 4) (* |ULTIMATE.start_main_~j~0#1| (* |ULTIMATE.start_main_~p~0#1| 4)) |ULTIMATE.start_main_~#C~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| (* |ULTIMATE.start_main_~n~0#1| (* |ULTIMATE.start_main_~p~0#1| 4))))) |ULTIMATE.start_main_#t~mem10#1|) (= |ULTIMATE.start_main_#t~mem9#1| (select (select |#memory_int| |ULTIMATE.start_main_~#B~0#1.base|) (+ (* |ULTIMATE.start_main_~k~0#1| 4) (* |ULTIMATE.start_main_~j~0#1| (* |ULTIMATE.start_main_~p~0#1| 4)) |ULTIMATE.start_main_~#B~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| (* |ULTIMATE.start_main_~n~0#1| (* |ULTIMATE.start_main_~p~0#1| 4)))))) (= (ite (= (mod |ULTIMATE.start_main_#t~mem10#1| 4294967296) (mod (+ |ULTIMATE.start_main_#t~mem9#1| |ULTIMATE.start_main_#t~mem8#1|) 4294967296)) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= |ULTIMATE.start_main_~k~0#1| 0) (= |ULTIMATE.start_main_~p~0#1| 1800) (= |ULTIMATE.start_main_~#A~0#1.offset| 0) (= (select (select |#memory_int| |ULTIMATE.start_main_~#A~0#1.base|) (+ (* |ULTIMATE.start_main_~k~0#1| 4) (* |ULTIMATE.start_main_~j~0#1| (* |ULTIMATE.start_main_~p~0#1| 4)) |ULTIMATE.start_main_~#A~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| (* |ULTIMATE.start_main_~n~0#1| (* |ULTIMATE.start_main_~p~0#1| 4))))) |ULTIMATE.start_main_#t~mem8#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#B~0#1.base|) (= |ULTIMATE.start_main_~j~0#1| 0) (= |ULTIMATE.start_main_~#B~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#C~0#1.base|) (<= 0 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~n~0#1| 1500) (= |#NULL.base| 0))' at error location [2022-11-19 08:19:21,343 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 08:19:21,343 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-19 08:19:21,343 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2022-11-19 08:19:21,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603252428] [2022-11-19 08:19:21,344 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-19 08:19:21,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-19 08:19:21,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:19:21,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-19 08:19:21,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2022-11-19 08:19:21,345 INFO L87 Difference]: Start difference. First operand 85 states and 108 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 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) [2022-11-19 08:19:21,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:19:21,562 INFO L93 Difference]: Finished difference Result 354 states and 461 transitions. [2022-11-19 08:19:21,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 08:19:21,563 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 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) Word has length 72 [2022-11-19 08:19:21,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:19:21,564 INFO L225 Difference]: With dead ends: 354 [2022-11-19 08:19:21,565 INFO L226 Difference]: Without dead ends: 278 [2022-11-19 08:19:21,565 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 186 SyntacticMatches, 15 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=106, Invalid=166, Unknown=0, NotChecked=0, Total=272 [2022-11-19 08:19:21,566 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 160 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:19:21,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 19 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:19:21,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2022-11-19 08:19:21,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 271. [2022-11-19 08:19:21,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 270 states have (on average 1.2333333333333334) internal successors, (333), 270 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:19:21,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 333 transitions. [2022-11-19 08:19:21,670 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 333 transitions. Word has length 72 [2022-11-19 08:19:21,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:19:21,671 INFO L495 AbstractCegarLoop]: Abstraction has 271 states and 333 transitions. [2022-11-19 08:19:21,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 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) [2022-11-19 08:19:21,671 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 333 transitions. [2022-11-19 08:19:21,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2022-11-19 08:19:21,682 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:19:21,682 INFO L195 NwaCegarLoop]: trace histogram [64, 64, 16, 16, 16, 16, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:19:21,813 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91cd7e4b-1afd-4463-9e25-82997bbd152d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-19 08:19:21,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91cd7e4b-1afd-4463-9e25-82997bbd152d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-19 08:19:21,906 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:19:21,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:19:21,907 INFO L85 PathProgramCache]: Analyzing trace with hash 1546414407, now seen corresponding path program 4 times [2022-11-19 08:19:21,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:19:21,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578940193] [2022-11-19 08:19:21,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:19:21,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:19:22,000 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 08:19:22,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [349723018] [2022-11-19 08:19:22,001 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-19 08:19:22,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:19:22,001 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91cd7e4b-1afd-4463-9e25-82997bbd152d/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:19:22,002 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91cd7e4b-1afd-4463-9e25-82997bbd152d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:19:22,045 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91cd7e4b-1afd-4463-9e25-82997bbd152d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-19 08:19:22,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:19:22,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 1647 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-19 08:19:22,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:19:22,634 INFO L134 CoverageAnalysis]: Checked inductivity of 6720 backedges. 398 proven. 10 refuted. 0 times theorem prover too weak. 6312 trivial. 0 not checked. [2022-11-19 08:19:22,634 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:19:22,715 INFO L134 CoverageAnalysis]: Checked inductivity of 6720 backedges. 398 proven. 10 refuted. 0 times theorem prover too weak. 6312 trivial. 0 not checked. [2022-11-19 08:19:22,716 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:19:22,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578940193] [2022-11-19 08:19:22,716 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 08:19:22,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [349723018] [2022-11-19 08:19:22,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [349723018] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:19:22,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [231427885] [2022-11-19 08:19:22,720 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-11-19 08:19:22,721 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 08:19:22,721 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 08:19:22,721 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 08:19:22,721 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 08:19:22,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:19:22,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:19:22,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:19:22,850 INFO L321 Elim1Store]: treesize reduction 190, result has 19.1 percent of original size [2022-11-19 08:19:22,850 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 12 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 15 case distinctions, treesize of input 60 treesize of output 93 [2022-11-19 08:19:22,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:19:22,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:19:22,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:19:22,875 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 18 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 61 [2022-11-19 08:19:22,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:19:22,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:19:22,924 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 61 [2022-11-19 08:19:23,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:19:23,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:19:23,044 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:19:23,106 INFO L321 Elim1Store]: treesize reduction 162, result has 16.5 percent of original size [2022-11-19 08:19:23,106 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 480 treesize of output 448 [2022-11-19 08:19:23,207 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:19:23,221 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-19 08:19:23,221 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 78 treesize of output 53 [2022-11-19 08:19:23,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:19:23,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:19:23,370 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:19:23,419 INFO L321 Elim1Store]: treesize reduction 158, result has 18.6 percent of original size [2022-11-19 08:19:23,420 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 305 treesize of output 285 [2022-11-19 08:19:23,494 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:19:23,508 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-19 08:19:23,509 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 78 treesize of output 53 [2022-11-19 08:19:23,571 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:19:23,584 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-19 08:19:23,585 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 78 treesize of output 53 [2022-11-19 08:19:23,658 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:19:23,672 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-19 08:19:23,672 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 78 treesize of output 53 [2022-11-19 08:19:23,697 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:19:23,710 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-19 08:19:23,711 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 78 treesize of output 53 [2022-11-19 08:19:23,800 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:19:23,813 INFO L321 Elim1Store]: treesize reduction 26, result has 48.0 percent of original size [2022-11-19 08:19:23,814 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 66 treesize of output 45 [2022-11-19 08:19:23,847 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:19:23,860 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-19 08:19:23,861 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 78 treesize of output 53 [2022-11-19 08:19:23,931 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:19:23,945 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-19 08:19:23,946 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 78 treesize of output 53 [2022-11-19 08:19:23,978 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:19:23,991 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-19 08:19:23,991 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 78 treesize of output 53 [2022-11-19 08:19:24,043 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:19:24,057 INFO L321 Elim1Store]: treesize reduction 26, result has 48.0 percent of original size [2022-11-19 08:19:24,057 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 66 treesize of output 45 [2022-11-19 08:19:24,090 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:19:24,105 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-19 08:19:24,105 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 78 treesize of output 53 [2022-11-19 08:19:24,146 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:19:24,159 INFO L321 Elim1Store]: treesize reduction 26, result has 48.0 percent of original size [2022-11-19 08:19:24,159 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 66 treesize of output 45 [2022-11-19 08:19:24,217 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:19:24,231 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-19 08:19:24,232 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 78 treesize of output 53 [2022-11-19 08:19:24,257 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:19:24,270 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-19 08:19:24,271 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 78 treesize of output 53 [2022-11-19 08:19:24,336 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:19:24,350 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-19 08:19:24,351 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 78 treesize of output 53 [2022-11-19 08:19:24,376 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:19:24,390 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-19 08:19:24,390 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 78 treesize of output 53 [2022-11-19 08:19:24,416 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:19:24,429 INFO L321 Elim1Store]: treesize reduction 26, result has 48.0 percent of original size [2022-11-19 08:19:24,429 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 66 treesize of output 45 [2022-11-19 08:19:24,469 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:19:24,484 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-19 08:19:24,484 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 78 treesize of output 53 [2022-11-19 08:19:24,509 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:19:24,524 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-19 08:19:24,525 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 78 treesize of output 53 [2022-11-19 08:19:24,550 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:19:24,563 INFO L321 Elim1Store]: treesize reduction 26, result has 48.0 percent of original size [2022-11-19 08:19:24,563 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 66 treesize of output 45 [2022-11-19 08:19:24,598 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:19:24,618 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-19 08:19:24,618 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 78 treesize of output 53 [2022-11-19 08:19:24,649 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:19:24,665 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-19 08:19:24,665 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 78 treesize of output 53 [2022-11-19 08:19:24,725 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:19:24,739 INFO L321 Elim1Store]: treesize reduction 26, result has 48.0 percent of original size [2022-11-19 08:19:24,740 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 66 treesize of output 45 [2022-11-19 08:19:24,778 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:19:24,793 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-19 08:19:24,793 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 78 treesize of output 53 [2022-11-19 08:19:24,865 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:19:24,879 INFO L321 Elim1Store]: treesize reduction 26, result has 48.0 percent of original size [2022-11-19 08:19:24,879 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 66 treesize of output 45 [2022-11-19 08:19:24,923 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:19:24,938 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-19 08:19:24,938 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 78 treesize of output 53 [2022-11-19 08:19:24,963 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:19:24,976 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-19 08:19:24,977 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 78 treesize of output 53 [2022-11-19 08:19:24,998 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:19:25,011 INFO L321 Elim1Store]: treesize reduction 26, result has 48.0 percent of original size [2022-11-19 08:19:25,012 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 66 treesize of output 45 [2022-11-19 08:19:25,043 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:19:25,057 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-19 08:19:25,058 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 78 treesize of output 53 [2022-11-19 08:19:25,085 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:19:25,100 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-19 08:19:25,101 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 78 treesize of output 53 [2022-11-19 08:19:25,132 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:19:25,132 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:19:25,171 INFO L321 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2022-11-19 08:19:25,171 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 91 [2022-11-19 08:19:25,220 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:19:25,221 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:19:25,264 INFO L321 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2022-11-19 08:19:25,265 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 91 [2022-11-19 08:19:25,403 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:19:25,403 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:19:25,446 INFO L321 Elim1Store]: treesize reduction 54, result has 51.4 percent of original size [2022-11-19 08:19:25,447 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 60 treesize of output 79 [2022-11-19 08:19:25,511 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:19:25,511 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:19:25,549 INFO L321 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2022-11-19 08:19:25,549 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 91 [2022-11-19 08:19:25,623 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:19:25,624 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:19:25,659 INFO L321 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2022-11-19 08:19:25,659 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 91 [2022-11-19 08:19:25,710 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:19:25,711 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:19:25,750 INFO L321 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2022-11-19 08:19:25,750 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 91 [2022-11-19 08:19:25,843 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:19:25,844 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:19:25,884 INFO L321 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2022-11-19 08:19:25,884 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 91 [2022-11-19 08:19:25,938 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:19:25,939 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:19:25,978 INFO L321 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2022-11-19 08:19:25,978 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 91 [2022-11-19 08:19:26,108 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:19:26,109 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:19:26,146 INFO L321 Elim1Store]: treesize reduction 54, result has 51.4 percent of original size [2022-11-19 08:19:26,146 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 60 treesize of output 79 [2022-11-19 08:19:26,193 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:19:26,194 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:19:26,231 INFO L321 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2022-11-19 08:19:26,232 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 91 [2022-11-19 08:19:26,246 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 08:19:27,308 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4470#(and (= |ULTIMATE.start_main_~i~0#1| 0) (= |ULTIMATE.start_main_~m~0#1| 1000) (= |ULTIMATE.start_main_~#C~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#A~0#1.base|) (= (select (select |#memory_int| |ULTIMATE.start_main_~#C~0#1.base|) (+ (* |ULTIMATE.start_main_~k~0#1| 4) (* |ULTIMATE.start_main_~j~0#1| (* |ULTIMATE.start_main_~p~0#1| 4)) |ULTIMATE.start_main_~#C~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| (* |ULTIMATE.start_main_~n~0#1| (* |ULTIMATE.start_main_~p~0#1| 4))))) |ULTIMATE.start_main_#t~mem10#1|) (= |ULTIMATE.start_main_#t~mem9#1| (select (select |#memory_int| |ULTIMATE.start_main_~#B~0#1.base|) (+ (* |ULTIMATE.start_main_~k~0#1| 4) (* |ULTIMATE.start_main_~j~0#1| (* |ULTIMATE.start_main_~p~0#1| 4)) |ULTIMATE.start_main_~#B~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| (* |ULTIMATE.start_main_~n~0#1| (* |ULTIMATE.start_main_~p~0#1| 4)))))) (= (ite (= (mod |ULTIMATE.start_main_#t~mem10#1| 4294967296) (mod (+ |ULTIMATE.start_main_#t~mem9#1| |ULTIMATE.start_main_#t~mem8#1|) 4294967296)) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= |ULTIMATE.start_main_~k~0#1| 0) (= |ULTIMATE.start_main_~p~0#1| 1800) (= |ULTIMATE.start_main_~#A~0#1.offset| 0) (= (select (select |#memory_int| |ULTIMATE.start_main_~#A~0#1.base|) (+ (* |ULTIMATE.start_main_~k~0#1| 4) (* |ULTIMATE.start_main_~j~0#1| (* |ULTIMATE.start_main_~p~0#1| 4)) |ULTIMATE.start_main_~#A~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| (* |ULTIMATE.start_main_~n~0#1| (* |ULTIMATE.start_main_~p~0#1| 4))))) |ULTIMATE.start_main_#t~mem8#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#B~0#1.base|) (= |ULTIMATE.start_main_~j~0#1| 0) (= |ULTIMATE.start_main_~#B~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#C~0#1.base|) (<= 0 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~n~0#1| 1500) (= |#NULL.base| 0))' at error location [2022-11-19 08:19:27,308 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 08:19:27,308 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-19 08:19:27,308 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-11-19 08:19:27,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292005701] [2022-11-19 08:19:27,309 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-19 08:19:27,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-19 08:19:27,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:19:27,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-19 08:19:27,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=261, Unknown=0, NotChecked=0, Total=420 [2022-11-19 08:19:27,310 INFO L87 Difference]: Start difference. First operand 271 states and 333 transitions. Second operand has 14 states, 14 states have (on average 2.357142857142857) internal successors, (33), 13 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:19:27,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:19:27,714 INFO L93 Difference]: Finished difference Result 817 states and 1171 transitions. [2022-11-19 08:19:27,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-19 08:19:27,715 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.357142857142857) internal successors, (33), 13 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 216 [2022-11-19 08:19:27,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:19:27,718 INFO L225 Difference]: With dead ends: 817 [2022-11-19 08:19:27,718 INFO L226 Difference]: Without dead ends: 554 [2022-11-19 08:19:27,720 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 651 GetRequests, 600 SyntacticMatches, 27 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 746 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=244, Invalid=406, Unknown=0, NotChecked=0, Total=650 [2022-11-19 08:19:27,720 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 159 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 08:19:27,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 36 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 08:19:27,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2022-11-19 08:19:27,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 535. [2022-11-19 08:19:27,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 535 states, 534 states have (on average 1.1629213483146068) internal successors, (621), 534 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:19:27,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 535 states to 535 states and 621 transitions. [2022-11-19 08:19:27,884 INFO L78 Accepts]: Start accepts. Automaton has 535 states and 621 transitions. Word has length 216 [2022-11-19 08:19:27,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:19:27,885 INFO L495 AbstractCegarLoop]: Abstraction has 535 states and 621 transitions. [2022-11-19 08:19:27,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.357142857142857) internal successors, (33), 13 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:19:27,885 INFO L276 IsEmpty]: Start isEmpty. Operand 535 states and 621 transitions. [2022-11-19 08:19:27,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2022-11-19 08:19:27,893 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:19:27,893 INFO L195 NwaCegarLoop]: trace histogram [160, 160, 16, 16, 16, 16, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:19:27,904 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91cd7e4b-1afd-4463-9e25-82997bbd152d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-19 08:19:28,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91cd7e4b-1afd-4463-9e25-82997bbd152d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-19 08:19:28,104 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:19:28,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:19:28,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1138692935, now seen corresponding path program 5 times [2022-11-19 08:19:28,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:19:28,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604292235] [2022-11-19 08:19:28,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:19:28,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:19:28,293 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 08:19:28,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1125439026] [2022-11-19 08:19:28,294 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 08:19:28,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:19:28,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91cd7e4b-1afd-4463-9e25-82997bbd152d/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:19:28,295 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91cd7e4b-1afd-4463-9e25-82997bbd152d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:19:28,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91cd7e4b-1afd-4463-9e25-82997bbd152d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process