./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-crafted/mapavg1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05297890-0f03-4ede-b80d-a3fa81978565/bin/utaipan-Xvt2sAort0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05297890-0f03-4ede-b80d-a3fa81978565/bin/utaipan-Xvt2sAort0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05297890-0f03-4ede-b80d-a3fa81978565/bin/utaipan-Xvt2sAort0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05297890-0f03-4ede-b80d-a3fa81978565/bin/utaipan-Xvt2sAort0/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-crafted/mapavg1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05297890-0f03-4ede-b80d-a3fa81978565/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05297890-0f03-4ede-b80d-a3fa81978565/bin/utaipan-Xvt2sAort0 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9597042154fc2fc3c1808d4beed7ae6070061c42e65231c1781a660590e51714 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 16:03:30,155 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 16:03:30,157 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 16:03:30,182 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 16:03:30,183 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 16:03:30,187 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 16:03:30,190 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 16:03:30,193 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 16:03:30,195 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 16:03:30,204 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 16:03:30,205 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 16:03:30,208 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 16:03:30,208 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 16:03:30,211 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 16:03:30,213 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 16:03:30,214 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 16:03:30,216 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 16:03:30,217 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 16:03:30,219 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 16:03:30,226 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 16:03:30,228 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 16:03:30,230 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 16:03:30,233 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 16:03:30,234 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 16:03:30,243 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 16:03:30,243 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 16:03:30,243 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 16:03:30,245 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 16:03:30,246 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 16:03:30,247 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 16:03:30,248 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 16:03:30,249 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 16:03:30,251 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 16:03:30,253 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 16:03:30,255 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 16:03:30,255 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 16:03:30,256 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 16:03:30,256 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 16:03:30,257 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 16:03:30,258 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 16:03:30,258 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 16:03:30,259 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05297890-0f03-4ede-b80d-a3fa81978565/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-16 16:03:30,303 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 16:03:30,303 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 16:03:30,304 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 16:03:30,304 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 16:03:30,305 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 16:03:30,305 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 16:03:30,306 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-16 16:03:30,306 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-16 16:03:30,306 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-16 16:03:30,306 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-16 16:03:30,308 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-16 16:03:30,308 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-16 16:03:30,308 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-16 16:03:30,308 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-16 16:03:30,308 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-16 16:03:30,309 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-16 16:03:30,309 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-16 16:03:30,309 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-16 16:03:30,310 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 16:03:30,310 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 16:03:30,310 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 16:03:30,311 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 16:03:30,311 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 16:03:30,312 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 16:03:30,313 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 16:03:30,313 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 16:03:30,313 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 16:03:30,313 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 16:03:30,314 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 16:03:30,314 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 16:03:30,314 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 16:03:30,314 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 16:03:30,315 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 16:03:30,323 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 16:03:30,324 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-16 16:03:30,324 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 16:03:30,324 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 16:03:30,324 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-16 16:03:30,324 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 16:03:30,325 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 16:03:30,325 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-16 16:03:30,325 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_05297890-0f03-4ede-b80d-a3fa81978565/bin/utaipan-Xvt2sAort0/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05297890-0f03-4ede-b80d-a3fa81978565/bin/utaipan-Xvt2sAort0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9597042154fc2fc3c1808d4beed7ae6070061c42e65231c1781a660590e51714 [2022-11-16 16:03:30,614 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 16:03:30,637 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 16:03:30,640 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 16:03:30,642 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 16:03:30,643 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 16:03:30,644 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05297890-0f03-4ede-b80d-a3fa81978565/bin/utaipan-Xvt2sAort0/../../sv-benchmarks/c/array-crafted/mapavg1.i [2022-11-16 16:03:30,724 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05297890-0f03-4ede-b80d-a3fa81978565/bin/utaipan-Xvt2sAort0/data/1a2e6a50a/1c55de9ec52f4c87a352bad8a714c322/FLAG7e6ae94a4 [2022-11-16 16:03:31,221 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 16:03:31,221 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05297890-0f03-4ede-b80d-a3fa81978565/sv-benchmarks/c/array-crafted/mapavg1.i [2022-11-16 16:03:31,236 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05297890-0f03-4ede-b80d-a3fa81978565/bin/utaipan-Xvt2sAort0/data/1a2e6a50a/1c55de9ec52f4c87a352bad8a714c322/FLAG7e6ae94a4 [2022-11-16 16:03:31,587 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05297890-0f03-4ede-b80d-a3fa81978565/bin/utaipan-Xvt2sAort0/data/1a2e6a50a/1c55de9ec52f4c87a352bad8a714c322 [2022-11-16 16:03:31,589 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 16:03:31,591 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 16:03:31,593 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 16:03:31,593 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 16:03:31,597 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 16:03:31,598 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 04:03:31" (1/1) ... [2022-11-16 16:03:31,599 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ed45e2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:03:31, skipping insertion in model container [2022-11-16 16:03:31,599 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 04:03:31" (1/1) ... [2022-11-16 16:03:31,608 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 16:03:31,623 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 16:03:31,837 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05297890-0f03-4ede-b80d-a3fa81978565/sv-benchmarks/c/array-crafted/mapavg1.i[1306,1319] [2022-11-16 16:03:31,841 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 16:03:31,849 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 16:03:31,870 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05297890-0f03-4ede-b80d-a3fa81978565/sv-benchmarks/c/array-crafted/mapavg1.i[1306,1319] [2022-11-16 16:03:31,871 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 16:03:31,883 INFO L208 MainTranslator]: Completed translation [2022-11-16 16:03:31,883 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:03:31 WrapperNode [2022-11-16 16:03:31,883 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 16:03:31,884 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 16:03:31,884 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 16:03:31,884 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 16:03:31,891 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:03:31" (1/1) ... [2022-11-16 16:03:31,899 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:03:31" (1/1) ... [2022-11-16 16:03:31,918 INFO L138 Inliner]: procedures = 16, calls = 22, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 67 [2022-11-16 16:03:31,919 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 16:03:31,920 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 16:03:31,920 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 16:03:31,920 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 16:03:31,929 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:03:31" (1/1) ... [2022-11-16 16:03:31,930 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:03:31" (1/1) ... [2022-11-16 16:03:31,932 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:03:31" (1/1) ... [2022-11-16 16:03:31,933 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:03:31" (1/1) ... [2022-11-16 16:03:31,938 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:03:31" (1/1) ... [2022-11-16 16:03:31,942 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:03:31" (1/1) ... [2022-11-16 16:03:31,944 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:03:31" (1/1) ... [2022-11-16 16:03:31,945 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:03:31" (1/1) ... [2022-11-16 16:03:31,947 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 16:03:31,948 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 16:03:31,948 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 16:03:31,948 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 16:03:31,949 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:03:31" (1/1) ... [2022-11-16 16:03:31,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 16:03:31,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05297890-0f03-4ede-b80d-a3fa81978565/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:03:31,997 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05297890-0f03-4ede-b80d-a3fa81978565/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 16:03:32,025 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05297890-0f03-4ede-b80d-a3fa81978565/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 16:03:32,047 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 16:03:32,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 16:03:32,048 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 16:03:32,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 16:03:32,049 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 16:03:32,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 16:03:32,049 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 16:03:32,049 INFO L130 BoogieDeclarations]: Found specification of procedure mapavg [2022-11-16 16:03:32,049 INFO L138 BoogieDeclarations]: Found implementation of procedure mapavg [2022-11-16 16:03:32,049 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 16:03:32,140 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 16:03:32,142 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 16:03:32,330 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 16:03:32,387 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 16:03:32,388 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-16 16:03:32,391 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 04:03:32 BoogieIcfgContainer [2022-11-16 16:03:32,396 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 16:03:32,398 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 16:03:32,399 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 16:03:32,414 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 16:03:32,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 04:03:31" (1/3) ... [2022-11-16 16:03:32,416 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48432e86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 04:03:32, skipping insertion in model container [2022-11-16 16:03:32,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:03:31" (2/3) ... [2022-11-16 16:03:32,416 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48432e86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 04:03:32, skipping insertion in model container [2022-11-16 16:03:32,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 04:03:32" (3/3) ... [2022-11-16 16:03:32,418 INFO L112 eAbstractionObserver]: Analyzing ICFG mapavg1.i [2022-11-16 16:03:32,461 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 16:03:32,461 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 16:03:32,531 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 16:03:32,539 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;@4b1212d3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 16:03:32,539 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 16:03:32,544 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 16:03:32,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-16 16:03:32,553 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:03:32,553 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:03:32,554 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 16:03:32,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:03:32,560 INFO L85 PathProgramCache]: Analyzing trace with hash -93755173, now seen corresponding path program 1 times [2022-11-16 16:03:32,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:03:32,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61281049] [2022-11-16 16:03:32,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:03:32,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:03:32,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:03:32,970 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-16 16:03:32,970 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:03:32,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61281049] [2022-11-16 16:03:32,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61281049] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:03:32,974 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:03:32,974 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 16:03:32,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389408593] [2022-11-16 16:03:32,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:03:32,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 16:03:32,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:03:33,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 16:03:33,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 16:03:33,034 INFO L87 Difference]: Start difference. First operand has 17 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 16:03:33,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:03:33,123 INFO L93 Difference]: Finished difference Result 33 states and 43 transitions. [2022-11-16 16:03:33,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 16:03:33,126 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 20 [2022-11-16 16:03:33,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:03:33,143 INFO L225 Difference]: With dead ends: 33 [2022-11-16 16:03:33,143 INFO L226 Difference]: Without dead ends: 16 [2022-11-16 16:03:33,146 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 16:03:33,150 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 16:03:33,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 26 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 16:03:33,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-11-16 16:03:33,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2022-11-16 16:03:33,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 16:03:33,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 20 transitions. [2022-11-16 16:03:33,266 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 20 transitions. Word has length 20 [2022-11-16 16:03:33,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:03:33,267 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 20 transitions. [2022-11-16 16:03:33,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 16:03:33,269 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions. [2022-11-16 16:03:33,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-16 16:03:33,273 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:03:33,274 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:03:33,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 16:03:33,275 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 16:03:33,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:03:33,280 INFO L85 PathProgramCache]: Analyzing trace with hash 2047200199, now seen corresponding path program 1 times [2022-11-16 16:03:33,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:03:33,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205043329] [2022-11-16 16:03:33,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:03:33,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:03:33,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:03:33,433 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-16 16:03:33,433 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:03:33,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205043329] [2022-11-16 16:03:33,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205043329] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 16:03:33,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [492342320] [2022-11-16 16:03:33,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:03:33,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:03:33,435 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05297890-0f03-4ede-b80d-a3fa81978565/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:03:33,442 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05297890-0f03-4ede-b80d-a3fa81978565/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 16:03:33,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05297890-0f03-4ede-b80d-a3fa81978565/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 16:03:33,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:03:33,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 16:03:33,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:03:33,623 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 16:03:33,623 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 16:03:33,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [492342320] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:03:33,628 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 16:03:33,629 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-11-16 16:03:33,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917484081] [2022-11-16 16:03:33,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:03:33,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 16:03:33,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:03:33,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 16:03:33,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 16:03:33,638 INFO L87 Difference]: Start difference. First operand 16 states and 20 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 16:03:33,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:03:33,684 INFO L93 Difference]: Finished difference Result 29 states and 39 transitions. [2022-11-16 16:03:33,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 16:03:33,686 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 21 [2022-11-16 16:03:33,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:03:33,693 INFO L225 Difference]: With dead ends: 29 [2022-11-16 16:03:33,693 INFO L226 Difference]: Without dead ends: 17 [2022-11-16 16:03:33,694 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 16:03:33,696 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 16:03:33,698 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 23 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 16:03:33,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-11-16 16:03:33,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-11-16 16:03:33,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 16:03:33,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2022-11-16 16:03:33,711 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 21 [2022-11-16 16:03:33,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:03:33,711 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2022-11-16 16:03:33,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 16:03:33,712 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2022-11-16 16:03:33,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-16 16:03:33,713 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:03:33,713 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:03:33,732 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05297890-0f03-4ede-b80d-a3fa81978565/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 16:03:33,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05297890-0f03-4ede-b80d-a3fa81978565/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:03:33,919 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 16:03:33,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:03:33,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1585731678, now seen corresponding path program 1 times [2022-11-16 16:03:33,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:03:33,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663196206] [2022-11-16 16:03:33,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:03:33,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:03:33,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:03:34,080 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-16 16:03:34,080 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:03:34,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663196206] [2022-11-16 16:03:34,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663196206] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 16:03:34,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [892258136] [2022-11-16 16:03:34,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:03:34,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:03:34,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05297890-0f03-4ede-b80d-a3fa81978565/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:03:34,083 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05297890-0f03-4ede-b80d-a3fa81978565/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 16:03:34,091 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05297890-0f03-4ede-b80d-a3fa81978565/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 16:03:34,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:03:34,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 16:03:34,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:03:34,184 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-16 16:03:34,184 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 16:03:34,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [892258136] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:03:34,184 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 16:03:34,184 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-11-16 16:03:34,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718953877] [2022-11-16 16:03:34,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:03:34,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 16:03:34,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:03:34,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 16:03:34,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 16:03:34,186 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 16:03:34,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:03:34,207 INFO L93 Difference]: Finished difference Result 27 states and 32 transitions. [2022-11-16 16:03:34,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 16:03:34,207 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 24 [2022-11-16 16:03:34,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:03:34,208 INFO L225 Difference]: With dead ends: 27 [2022-11-16 16:03:34,208 INFO L226 Difference]: Without dead ends: 18 [2022-11-16 16:03:34,209 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 16:03:34,210 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 16:03:34,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 23 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 16:03:34,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-11-16 16:03:34,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-11-16 16:03:34,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 16:03:34,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2022-11-16 16:03:34,216 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 24 [2022-11-16 16:03:34,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:03:34,217 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2022-11-16 16:03:34,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 16:03:34,218 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2022-11-16 16:03:34,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-16 16:03:34,219 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:03:34,219 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:03:34,231 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05297890-0f03-4ede-b80d-a3fa81978565/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 16:03:34,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05297890-0f03-4ede-b80d-a3fa81978565/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-11-16 16:03:34,425 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 16:03:34,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:03:34,425 INFO L85 PathProgramCache]: Analyzing trace with hash 812087002, now seen corresponding path program 1 times [2022-11-16 16:03:34,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:03:34,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472378451] [2022-11-16 16:03:34,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:03:34,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:03:34,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:03:34,498 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-16 16:03:34,498 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:03:34,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472378451] [2022-11-16 16:03:34,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472378451] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 16:03:34,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1614855154] [2022-11-16 16:03:34,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:03:34,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:03:34,499 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05297890-0f03-4ede-b80d-a3fa81978565/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:03:34,500 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05297890-0f03-4ede-b80d-a3fa81978565/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 16:03:34,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05297890-0f03-4ede-b80d-a3fa81978565/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 16:03:34,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:03:34,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 16:03:34,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:03:34,659 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-16 16:03:34,659 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 16:03:34,712 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-16 16:03:34,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1614855154] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 16:03:34,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1440283813] [2022-11-16 16:03:34,740 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-11-16 16:03:34,740 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 16:03:34,743 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 16:03:34,749 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 16:03:34,749 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 16:03:34,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:03:34,887 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 16:03:34,888 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 26 [2022-11-16 16:03:34,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:03:34,928 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-16 16:03:34,929 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-11-16 16:03:34,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:03:34,975 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-16 16:03:35,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:03:35,101 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:03:35,133 INFO L321 Elim1Store]: treesize reduction 54, result has 28.0 percent of original size [2022-11-16 16:03:35,139 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 186 treesize of output 185 [2022-11-16 16:03:35,279 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-16 16:03:35,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:03:35,379 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2022-11-16 16:03:35,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:03:35,531 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 20 [2022-11-16 16:03:35,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:03:35,596 INFO L321 Elim1Store]: treesize reduction 45, result has 34.8 percent of original size [2022-11-16 16:03:35,597 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 80 [2022-11-16 16:03:35,680 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2022-11-16 16:03:35,699 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 16:03:35,917 INFO L197 IcfgInterpreter]: Interpreting procedure mapavg with input of size 12 for LOIs [2022-11-16 16:03:35,977 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 16:04:21,519 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '524#(and (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (or (not (= |ULTIMATE.start_main_~ret2~0#1| |ULTIMATE.start_main_~ret~1#1|)) (not (= |ULTIMATE.start_main_~ret5~0#1| |ULTIMATE.start_main_~ret~1#1|))) (<= 0 (+ |ULTIMATE.start_main_~ret~1#1| 2147483648)) (= |ULTIMATE.start_main_~temp~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 396 |ULTIMATE.start_main_~#x~0#1.offset|))) (<= |ULTIMATE.start_main_~ret~1#1| 2147483647) (exists ((v_mapavg_~ret~0_BEFORE_RETURN_5 Int)) (= |ULTIMATE.start_main_~ret5~0#1| (ite (<= (mod (ite (and (< v_mapavg_~ret~0_BEFORE_RETURN_5 0) (not (= (mod v_mapavg_~ret~0_BEFORE_RETURN_5 100) 0))) (+ (div v_mapavg_~ret~0_BEFORE_RETURN_5 100) 1) (div v_mapavg_~ret~0_BEFORE_RETURN_5 100)) 4294967296) 2147483647) (mod (ite (and (< v_mapavg_~ret~0_BEFORE_RETURN_5 0) (not (= (mod v_mapavg_~ret~0_BEFORE_RETURN_5 100) 0))) (+ (div v_mapavg_~ret~0_BEFORE_RETURN_5 100) 1) (div v_mapavg_~ret~0_BEFORE_RETURN_5 100)) 4294967296) (+ (mod (ite (and (< v_mapavg_~ret~0_BEFORE_RETURN_5 0) (not (= (mod v_mapavg_~ret~0_BEFORE_RETURN_5 100) 0))) (+ (div v_mapavg_~ret~0_BEFORE_RETURN_5 100) 1) (div v_mapavg_~ret~0_BEFORE_RETURN_5 100)) 4294967296) (- 4294967296))))) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 99 |ULTIMATE.start_main_~i~2#1|) (<= 0 |#StackHeapBarrier|) (<= 100 |ULTIMATE.start_main_~i~1#1|) (= |#NULL.base| 0))' at error location [2022-11-16 16:04:21,519 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 16:04:21,520 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 16:04:21,520 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 4] total 7 [2022-11-16 16:04:21,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342127523] [2022-11-16 16:04:21,520 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 16:04:21,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 16:04:21,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:04:21,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 16:04:21,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=287, Unknown=12, NotChecked=0, Total=380 [2022-11-16 16:04:21,522 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-16 16:04:21,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:04:21,561 INFO L93 Difference]: Finished difference Result 36 states and 46 transitions. [2022-11-16 16:04:21,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 16:04:21,561 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 25 [2022-11-16 16:04:21,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:04:21,562 INFO L225 Difference]: With dead ends: 36 [2022-11-16 16:04:21,562 INFO L226 Difference]: Without dead ends: 21 [2022-11-16 16:04:21,563 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 45.6s TimeCoverageRelationStatistics Valid=81, Invalid=287, Unknown=12, NotChecked=0, Total=380 [2022-11-16 16:04:21,564 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 16:04:21,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 36 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 16:04:21,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-11-16 16:04:21,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2022-11-16 16:04:21,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 16:04:21,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2022-11-16 16:04:21,570 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 25 [2022-11-16 16:04:21,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:04:21,570 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2022-11-16 16:04:21,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-16 16:04:21,571 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2022-11-16 16:04:21,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-16 16:04:21,572 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:04:21,572 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:04:21,582 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05297890-0f03-4ede-b80d-a3fa81978565/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 16:04:21,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05297890-0f03-4ede-b80d-a3fa81978565/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:04:21,773 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 16:04:21,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:04:21,774 INFO L85 PathProgramCache]: Analyzing trace with hash 287327470, now seen corresponding path program 2 times [2022-11-16 16:04:21,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:04:21,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013697077] [2022-11-16 16:04:21,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:04:21,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:04:21,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:04:21,925 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-16 16:04:21,925 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:04:21,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013697077] [2022-11-16 16:04:21,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013697077] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 16:04:21,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [584082076] [2022-11-16 16:04:21,926 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 16:04:21,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:04:21,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05297890-0f03-4ede-b80d-a3fa81978565/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:04:21,928 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05297890-0f03-4ede-b80d-a3fa81978565/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 16:04:21,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05297890-0f03-4ede-b80d-a3fa81978565/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 16:04:22,005 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-16 16:04:22,005 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 16:04:22,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 16:04:22,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:04:22,021 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-16 16:04:22,022 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 16:04:22,053 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-16 16:04:22,053 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [584082076] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 16:04:22,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [805306141] [2022-11-16 16:04:22,056 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-11-16 16:04:22,057 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 16:04:22,057 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 16:04:22,057 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 16:04:22,058 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 16:04:22,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:04:22,090 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 16:04:22,091 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 26 [2022-11-16 16:04:22,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:04:22,120 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-16 16:04:22,121 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-11-16 16:04:22,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:04:22,146 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 33 [2022-11-16 16:04:22,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:04:22,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:04:22,212 INFO L321 Elim1Store]: treesize reduction 49, result has 12.5 percent of original size [2022-11-16 16:04:22,213 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 196 treesize of output 184 [2022-11-16 16:04:22,256 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-16 16:04:22,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:04:22,324 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2022-11-16 16:04:22,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:04:22,453 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:04:22,454 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2022-11-16 16:04:22,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:04:22,499 INFO L321 Elim1Store]: treesize reduction 45, result has 6.3 percent of original size [2022-11-16 16:04:22,499 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 80 treesize of output 72 [2022-11-16 16:04:22,543 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2022-11-16 16:04:22,559 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 16:04:22,681 INFO L197 IcfgInterpreter]: Interpreting procedure mapavg with input of size 12 for LOIs [2022-11-16 16:04:22,708 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 16:05:07,976 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '797#(and (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (or (not (= |ULTIMATE.start_main_~ret2~0#1| |ULTIMATE.start_main_~ret~1#1|)) (not (= |ULTIMATE.start_main_~ret5~0#1| |ULTIMATE.start_main_~ret~1#1|))) (<= 0 (+ |ULTIMATE.start_main_~ret~1#1| 2147483648)) (<= |#NULL.offset| 0) (= |ULTIMATE.start_main_~temp~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 396 |ULTIMATE.start_main_~#x~0#1.offset|))) (<= |ULTIMATE.start_main_~ret~1#1| 2147483647) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 99 |ULTIMATE.start_main_~i~2#1|) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|) (<= 100 |ULTIMATE.start_main_~i~1#1|) (= |#NULL.base| 0) (exists ((v_mapavg_~ret~0_BEFORE_RETURN_12 Int)) (= |ULTIMATE.start_main_~ret5~0#1| (ite (<= (mod (ite (and (not (= (mod v_mapavg_~ret~0_BEFORE_RETURN_12 100) 0)) (< v_mapavg_~ret~0_BEFORE_RETURN_12 0)) (+ (div v_mapavg_~ret~0_BEFORE_RETURN_12 100) 1) (div v_mapavg_~ret~0_BEFORE_RETURN_12 100)) 4294967296) 2147483647) (mod (ite (and (not (= (mod v_mapavg_~ret~0_BEFORE_RETURN_12 100) 0)) (< v_mapavg_~ret~0_BEFORE_RETURN_12 0)) (+ (div v_mapavg_~ret~0_BEFORE_RETURN_12 100) 1) (div v_mapavg_~ret~0_BEFORE_RETURN_12 100)) 4294967296) (+ (mod (ite (and (not (= (mod v_mapavg_~ret~0_BEFORE_RETURN_12 100) 0)) (< v_mapavg_~ret~0_BEFORE_RETURN_12 0)) (+ (div v_mapavg_~ret~0_BEFORE_RETURN_12 100) 1) (div v_mapavg_~ret~0_BEFORE_RETURN_12 100)) 4294967296) (- 4294967296))))))' at error location [2022-11-16 16:05:07,977 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 16:05:07,977 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 16:05:07,977 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-11-16 16:05:07,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572566666] [2022-11-16 16:05:07,977 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 16:05:07,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 16:05:07,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:05:07,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 16:05:07,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=287, Unknown=12, NotChecked=0, Total=380 [2022-11-16 16:05:07,979 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-16 16:05:08,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:05:08,021 INFO L93 Difference]: Finished difference Result 38 states and 50 transitions. [2022-11-16 16:05:08,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 16:05:08,022 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 28 [2022-11-16 16:05:08,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:05:08,023 INFO L225 Difference]: With dead ends: 38 [2022-11-16 16:05:08,023 INFO L226 Difference]: Without dead ends: 24 [2022-11-16 16:05:08,024 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 45.3s TimeCoverageRelationStatistics Valid=81, Invalid=287, Unknown=12, NotChecked=0, Total=380 [2022-11-16 16:05:08,025 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 16:05:08,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 16:05:08,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-11-16 16:05:08,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-11-16 16:05:08,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 states have internal predecessors, (22), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 16:05:08,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2022-11-16 16:05:08,029 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 28 [2022-11-16 16:05:08,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:05:08,030 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2022-11-16 16:05:08,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-16 16:05:08,030 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2022-11-16 16:05:08,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-16 16:05:08,031 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:05:08,031 INFO L195 NwaCegarLoop]: trace histogram [12, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:05:08,046 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05297890-0f03-4ede-b80d-a3fa81978565/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 16:05:08,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05297890-0f03-4ede-b80d-a3fa81978565/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:05:08,232 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 16:05:08,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:05:08,233 INFO L85 PathProgramCache]: Analyzing trace with hash -1977451377, now seen corresponding path program 3 times [2022-11-16 16:05:08,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:05:08,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912461103] [2022-11-16 16:05:08,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:05:08,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:05:08,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:05:08,316 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2022-11-16 16:05:08,316 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:05:08,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912461103] [2022-11-16 16:05:08,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912461103] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 16:05:08,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1835474077] [2022-11-16 16:05:08,317 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 16:05:08,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:05:08,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05297890-0f03-4ede-b80d-a3fa81978565/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:05:08,318 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05297890-0f03-4ede-b80d-a3fa81978565/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 16:05:08,347 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05297890-0f03-4ede-b80d-a3fa81978565/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 16:05:08,424 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-16 16:05:08,425 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 16:05:08,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 16:05:08,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:05:08,470 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-11-16 16:05:08,470 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 16:05:08,559 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-11-16 16:05:08,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1835474077] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 16:05:08,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1312507045] [2022-11-16 16:05:08,562 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-11-16 16:05:08,563 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 16:05:08,563 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 16:05:08,563 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 16:05:08,564 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 16:05:08,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:08,590 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 16:05:08,591 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 26 [2022-11-16 16:05:08,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:08,620 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-16 16:05:08,620 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-11-16 16:05:08,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:08,639 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-16 16:05:08,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:08,698 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:05:08,724 INFO L321 Elim1Store]: treesize reduction 54, result has 28.0 percent of original size [2022-11-16 16:05:08,724 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 186 treesize of output 185 [2022-11-16 16:05:08,789 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-16 16:05:08,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:08,844 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2022-11-16 16:05:08,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:08,935 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:05:08,936 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2022-11-16 16:05:08,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:08,976 INFO L321 Elim1Store]: treesize reduction 45, result has 6.3 percent of original size [2022-11-16 16:05:08,976 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 80 treesize of output 72 [2022-11-16 16:05:09,004 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2022-11-16 16:05:09,021 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 16:05:09,155 INFO L197 IcfgInterpreter]: Interpreting procedure mapavg with input of size 12 for LOIs [2022-11-16 16:05:09,182 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 16:05:54,537 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1141#(and (<= 0 |#NULL.base|) (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~#x~0#1.offset|) (or (not (= |ULTIMATE.start_main_~ret2~0#1| |ULTIMATE.start_main_~ret~1#1|)) (not (= |ULTIMATE.start_main_~ret5~0#1| |ULTIMATE.start_main_~ret~1#1|))) (<= 0 (+ |ULTIMATE.start_main_~ret~1#1| 2147483648)) (<= |#NULL.offset| 0) (= |ULTIMATE.start_main_~temp~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 396 |ULTIMATE.start_main_~#x~0#1.offset|))) (<= |ULTIMATE.start_main_~ret~1#1| 2147483647) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (<= |#NULL.base| 0) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 99 |ULTIMATE.start_main_~i~2#1|) (<= 0 |#NULL.offset|) (<= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 |#StackHeapBarrier|) (exists ((v_mapavg_~ret~0_BEFORE_RETURN_17 Int)) (= |ULTIMATE.start_main_~ret5~0#1| (ite (<= (mod (ite (and (not (= (mod v_mapavg_~ret~0_BEFORE_RETURN_17 100) 0)) (< v_mapavg_~ret~0_BEFORE_RETURN_17 0)) (+ (div v_mapavg_~ret~0_BEFORE_RETURN_17 100) 1) (div v_mapavg_~ret~0_BEFORE_RETURN_17 100)) 4294967296) 2147483647) (mod (ite (and (not (= (mod v_mapavg_~ret~0_BEFORE_RETURN_17 100) 0)) (< v_mapavg_~ret~0_BEFORE_RETURN_17 0)) (+ (div v_mapavg_~ret~0_BEFORE_RETURN_17 100) 1) (div v_mapavg_~ret~0_BEFORE_RETURN_17 100)) 4294967296) (+ (- 4294967296) (mod (ite (and (not (= (mod v_mapavg_~ret~0_BEFORE_RETURN_17 100) 0)) (< v_mapavg_~ret~0_BEFORE_RETURN_17 0)) (+ (div v_mapavg_~ret~0_BEFORE_RETURN_17 100) 1) (div v_mapavg_~ret~0_BEFORE_RETURN_17 100)) 4294967296))))) (<= 100 |ULTIMATE.start_main_~i~1#1|))' at error location [2022-11-16 16:05:54,537 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 16:05:54,538 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 16:05:54,538 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 7] total 14 [2022-11-16 16:05:54,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328525679] [2022-11-16 16:05:54,538 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 16:05:54,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-16 16:05:54,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:05:54,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-16 16:05:54,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=559, Unknown=12, NotChecked=0, Total=702 [2022-11-16 16:05:54,540 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-16 16:05:54,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:05:54,614 INFO L93 Difference]: Finished difference Result 49 states and 63 transitions. [2022-11-16 16:05:54,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 16:05:54,615 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 37 [2022-11-16 16:05:54,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:05:54,616 INFO L225 Difference]: With dead ends: 49 [2022-11-16 16:05:54,616 INFO L226 Difference]: Without dead ends: 31 [2022-11-16 16:05:54,617 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 45.4s TimeCoverageRelationStatistics Valid=131, Invalid=559, Unknown=12, NotChecked=0, Total=702 [2022-11-16 16:05:54,617 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 16:05:54,618 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 70 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 16:05:54,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-11-16 16:05:54,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2022-11-16 16:05:54,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 26 states have internal predecessors, (29), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 16:05:54,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2022-11-16 16:05:54,623 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 37 [2022-11-16 16:05:54,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:05:54,624 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2022-11-16 16:05:54,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-16 16:05:54,624 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2022-11-16 16:05:54,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-16 16:05:54,625 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:05:54,625 INFO L195 NwaCegarLoop]: trace histogram [12, 10, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:05:54,642 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05297890-0f03-4ede-b80d-a3fa81978565/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 16:05:54,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05297890-0f03-4ede-b80d-a3fa81978565/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:05:54,831 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 16:05:54,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:05:54,832 INFO L85 PathProgramCache]: Analyzing trace with hash -591030245, now seen corresponding path program 4 times [2022-11-16 16:05:54,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:05:54,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083800571] [2022-11-16 16:05:54,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:05:54,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:05:54,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:05:55,219 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2022-11-16 16:05:55,219 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:05:55,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083800571] [2022-11-16 16:05:55,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083800571] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 16:05:55,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1517769434] [2022-11-16 16:05:55,220 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-16 16:05:55,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:05:55,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05297890-0f03-4ede-b80d-a3fa81978565/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:05:55,222 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05297890-0f03-4ede-b80d-a3fa81978565/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 16:05:55,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05297890-0f03-4ede-b80d-a3fa81978565/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 16:05:55,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:05:55,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-16 16:05:55,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:05:55,393 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2022-11-16 16:05:55,393 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 16:05:55,646 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2022-11-16 16:05:55,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1517769434] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 16:05:55,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1774639531] [2022-11-16 16:05:55,648 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-11-16 16:05:55,649 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 16:05:55,649 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 16:05:55,649 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 16:05:55,649 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 16:05:55,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:55,684 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-16 16:05:55,684 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-11-16 16:05:55,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:55,702 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-16 16:05:55,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:55,718 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 33 [2022-11-16 16:05:55,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:55,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:55,778 INFO L321 Elim1Store]: treesize reduction 49, result has 12.5 percent of original size [2022-11-16 16:05:55,779 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 196 treesize of output 184 [2022-11-16 16:05:55,814 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 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-16 16:05:55,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:55,883 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2022-11-16 16:05:55,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:55,977 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:05:55,978 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2022-11-16 16:05:56,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:56,019 INFO L321 Elim1Store]: treesize reduction 45, result has 6.3 percent of original size [2022-11-16 16:05:56,019 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 80 treesize of output 72 [2022-11-16 16:05:56,052 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2022-11-16 16:05:56,065 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 16:05:56,180 INFO L197 IcfgInterpreter]: Interpreting procedure mapavg with input of size 12 for LOIs [2022-11-16 16:05:56,207 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 16:06:41,544 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1574#(and (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (or (not (= |ULTIMATE.start_main_~ret2~0#1| |ULTIMATE.start_main_~ret~1#1|)) (not (= |ULTIMATE.start_main_~ret5~0#1| |ULTIMATE.start_main_~ret~1#1|))) (<= 0 (+ |ULTIMATE.start_main_~ret~1#1| 2147483648)) (= |ULTIMATE.start_main_~temp~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 396 |ULTIMATE.start_main_~#x~0#1.offset|))) (<= |ULTIMATE.start_main_~ret~1#1| 2147483647) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 99 |ULTIMATE.start_main_~i~2#1|) (<= 0 |#StackHeapBarrier|) (exists ((v_mapavg_~ret~0_BEFORE_RETURN_24 Int)) (= |ULTIMATE.start_main_~ret5~0#1| (ite (<= (mod (ite (and (< v_mapavg_~ret~0_BEFORE_RETURN_24 0) (not (= (mod v_mapavg_~ret~0_BEFORE_RETURN_24 100) 0))) (+ (div v_mapavg_~ret~0_BEFORE_RETURN_24 100) 1) (div v_mapavg_~ret~0_BEFORE_RETURN_24 100)) 4294967296) 2147483647) (mod (ite (and (< v_mapavg_~ret~0_BEFORE_RETURN_24 0) (not (= (mod v_mapavg_~ret~0_BEFORE_RETURN_24 100) 0))) (+ (div v_mapavg_~ret~0_BEFORE_RETURN_24 100) 1) (div v_mapavg_~ret~0_BEFORE_RETURN_24 100)) 4294967296) (+ (mod (ite (and (< v_mapavg_~ret~0_BEFORE_RETURN_24 0) (not (= (mod v_mapavg_~ret~0_BEFORE_RETURN_24 100) 0))) (+ (div v_mapavg_~ret~0_BEFORE_RETURN_24 100) 1) (div v_mapavg_~ret~0_BEFORE_RETURN_24 100)) 4294967296) (- 4294967296))))) (<= 100 |ULTIMATE.start_main_~i~1#1|) (= |#NULL.base| 0))' at error location [2022-11-16 16:06:41,544 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 16:06:41,544 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 16:06:41,544 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 13] total 25 [2022-11-16 16:06:41,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723844745] [2022-11-16 16:06:41,545 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 16:06:41,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-16 16:06:41,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:06:41,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-16 16:06:41,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=360, Invalid=1034, Unknown=12, NotChecked=0, Total=1406 [2022-11-16 16:06:41,548 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand has 25 states, 25 states have (on average 1.56) internal successors, (39), 25 states have internal predecessors, (39), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-16 16:06:41,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:06:41,635 INFO L93 Difference]: Finished difference Result 62 states and 81 transitions. [2022-11-16 16:06:41,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-16 16:06:41,636 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.56) internal successors, (39), 25 states have internal predecessors, (39), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 44 [2022-11-16 16:06:41,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:06:41,637 INFO L225 Difference]: With dead ends: 62 [2022-11-16 16:06:41,637 INFO L226 Difference]: Without dead ends: 43 [2022-11-16 16:06:41,638 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 498 ImplicationChecksByTransitivity, 45.6s TimeCoverageRelationStatistics Valid=360, Invalid=1034, Unknown=12, NotChecked=0, Total=1406 [2022-11-16 16:06:41,639 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 16:06:41,639 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 48 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 16:06:41,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-11-16 16:06:41,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2022-11-16 16:06:41,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 38 states have (on average 1.0789473684210527) internal successors, (41), 38 states have internal predecessors, (41), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 16:06:41,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2022-11-16 16:06:41,646 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 44 [2022-11-16 16:06:41,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:06:41,646 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2022-11-16 16:06:41,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.56) internal successors, (39), 25 states have internal predecessors, (39), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-16 16:06:41,647 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2022-11-16 16:06:41,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-16 16:06:41,648 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:06:41,648 INFO L195 NwaCegarLoop]: trace histogram [22, 12, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:06:41,654 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05297890-0f03-4ede-b80d-a3fa81978565/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-16 16:06:41,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05297890-0f03-4ede-b80d-a3fa81978565/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-16 16:06:41,854 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 16:06:41,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:06:41,855 INFO L85 PathProgramCache]: Analyzing trace with hash -1525143269, now seen corresponding path program 5 times [2022-11-16 16:06:41,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:06:41,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591873140] [2022-11-16 16:06:41,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:06:41,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:06:41,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:06:42,689 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2022-11-16 16:06:42,689 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:06:42,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591873140] [2022-11-16 16:06:42,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591873140] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 16:06:42,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [869179830] [2022-11-16 16:06:42,690 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 16:06:42,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:06:42,690 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05297890-0f03-4ede-b80d-a3fa81978565/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:06:42,695 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05297890-0f03-4ede-b80d-a3fa81978565/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 16:06:42,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05297890-0f03-4ede-b80d-a3fa81978565/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 16:06:42,822 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-16 16:06:42,822 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 16:06:42,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 16:06:42,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:06:42,933 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 52 proven. 10 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2022-11-16 16:06:42,934 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 16:06:43,067 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 52 proven. 10 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2022-11-16 16:06:43,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [869179830] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 16:06:43,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [45057061] [2022-11-16 16:06:43,070 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-11-16 16:06:43,070 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 16:06:43,070 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 16:06:43,070 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 16:06:43,070 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 16:06:43,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:06:43,105 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-16 16:06:43,105 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-11-16 16:06:43,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:06:43,118 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-16 16:06:43,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:06:43,145 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 33 [2022-11-16 16:06:43,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:06:43,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:06:43,231 INFO L321 Elim1Store]: treesize reduction 49, result has 12.5 percent of original size [2022-11-16 16:06:43,234 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 196 treesize of output 184 [2022-11-16 16:06:43,285 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-16 16:06:43,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:06:43,372 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2022-11-16 16:06:43,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:06:43,486 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 20 [2022-11-16 16:06:43,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:06:43,551 INFO L321 Elim1Store]: treesize reduction 45, result has 34.8 percent of original size [2022-11-16 16:06:43,551 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 80 [2022-11-16 16:06:43,609 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2022-11-16 16:06:43,622 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 16:06:43,768 INFO L197 IcfgInterpreter]: Interpreting procedure mapavg with input of size 12 for LOIs [2022-11-16 16:06:43,797 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 16:07:27,353 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2139#(and (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (or (not (= |ULTIMATE.start_main_~ret2~0#1| |ULTIMATE.start_main_~ret~1#1|)) (not (= |ULTIMATE.start_main_~ret5~0#1| |ULTIMATE.start_main_~ret~1#1|))) (exists ((v_mapavg_~ret~0_BEFORE_RETURN_30 Int)) (= |ULTIMATE.start_main_~ret5~0#1| (ite (<= (mod (ite (and (< v_mapavg_~ret~0_BEFORE_RETURN_30 0) (not (= (mod v_mapavg_~ret~0_BEFORE_RETURN_30 100) 0))) (+ (div v_mapavg_~ret~0_BEFORE_RETURN_30 100) 1) (div v_mapavg_~ret~0_BEFORE_RETURN_30 100)) 4294967296) 2147483647) (mod (ite (and (< v_mapavg_~ret~0_BEFORE_RETURN_30 0) (not (= (mod v_mapavg_~ret~0_BEFORE_RETURN_30 100) 0))) (+ (div v_mapavg_~ret~0_BEFORE_RETURN_30 100) 1) (div v_mapavg_~ret~0_BEFORE_RETURN_30 100)) 4294967296) (+ (mod (ite (and (< v_mapavg_~ret~0_BEFORE_RETURN_30 0) (not (= (mod v_mapavg_~ret~0_BEFORE_RETURN_30 100) 0))) (+ (div v_mapavg_~ret~0_BEFORE_RETURN_30 100) 1) (div v_mapavg_~ret~0_BEFORE_RETURN_30 100)) 4294967296) (- 4294967296))))) (<= 0 (+ |ULTIMATE.start_main_~ret~1#1| 2147483648)) (= |ULTIMATE.start_main_~temp~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 396 |ULTIMATE.start_main_~#x~0#1.offset|))) (<= |ULTIMATE.start_main_~ret~1#1| 2147483647) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 99 |ULTIMATE.start_main_~i~2#1|) (<= 0 |#StackHeapBarrier|) (<= 100 |ULTIMATE.start_main_~i~1#1|) (= |#NULL.base| 0))' at error location [2022-11-16 16:07:27,354 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 16:07:27,354 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 16:07:27,354 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 7, 7] total 35 [2022-11-16 16:07:27,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258874750] [2022-11-16 16:07:27,354 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 16:07:27,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-16 16:07:27,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:07:27,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-16 16:07:27,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=425, Invalid=1819, Unknown=12, NotChecked=0, Total=2256 [2022-11-16 16:07:27,357 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand has 35 states, 35 states have (on average 1.5142857142857142) internal successors, (53), 35 states have internal predecessors, (53), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-16 16:07:27,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:07:27,471 INFO L93 Difference]: Finished difference Result 69 states and 86 transitions. [2022-11-16 16:07:27,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-16 16:07:27,472 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.5142857142857142) internal successors, (53), 35 states have internal predecessors, (53), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 56 [2022-11-16 16:07:27,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:07:27,478 INFO L225 Difference]: With dead ends: 69 [2022-11-16 16:07:27,479 INFO L226 Difference]: Without dead ends: 50 [2022-11-16 16:07:27,480 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 704 ImplicationChecksByTransitivity, 44.1s TimeCoverageRelationStatistics Valid=425, Invalid=1819, Unknown=12, NotChecked=0, Total=2256 [2022-11-16 16:07:27,480 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 16:07:27,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 106 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 16:07:27,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-11-16 16:07:27,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2022-11-16 16:07:27,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 45 states have (on average 1.0666666666666667) internal successors, (48), 45 states have internal predecessors, (48), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 16:07:27,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2022-11-16 16:07:27,492 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 56 [2022-11-16 16:07:27,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:07:27,493 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2022-11-16 16:07:27,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.5142857142857142) internal successors, (53), 35 states have internal predecessors, (53), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-16 16:07:27,493 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2022-11-16 16:07:27,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-16 16:07:27,496 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:07:27,497 INFO L195 NwaCegarLoop]: trace histogram [30, 23, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:07:27,511 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05297890-0f03-4ede-b80d-a3fa81978565/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-16 16:07:27,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05297890-0f03-4ede-b80d-a3fa81978565/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-16 16:07:27,703 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 16:07:27,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:07:27,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1012122343, now seen corresponding path program 6 times [2022-11-16 16:07:27,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:07:27,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272704444] [2022-11-16 16:07:27,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:07:27,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:07:27,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:07:28,572 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 537 trivial. 0 not checked. [2022-11-16 16:07:28,572 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:07:28,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272704444] [2022-11-16 16:07:28,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272704444] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 16:07:28,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1328872318] [2022-11-16 16:07:28,572 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 16:07:28,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:07:28,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05297890-0f03-4ede-b80d-a3fa81978565/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:07:28,575 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05297890-0f03-4ede-b80d-a3fa81978565/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 16:07:28,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05297890-0f03-4ede-b80d-a3fa81978565/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-16 16:07:28,744 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-16 16:07:28,744 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 16:07:28,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-16 16:07:28,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:07:28,812 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 537 trivial. 0 not checked. [2022-11-16 16:07:28,813 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 16:07:29,767 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 537 trivial. 0 not checked. [2022-11-16 16:07:29,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1328872318] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 16:07:29,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2002945326] [2022-11-16 16:07:29,769 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-11-16 16:07:29,769 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 16:07:29,770 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 16:07:29,770 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 16:07:29,770 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 16:07:29,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:07:29,806 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-16 16:07:29,807 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-11-16 16:07:29,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:07:29,817 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-16 16:07:29,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:07:29,844 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 33 [2022-11-16 16:07:29,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:07:29,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:07:29,901 INFO L321 Elim1Store]: treesize reduction 49, result has 12.5 percent of original size [2022-11-16 16:07:29,902 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 196 treesize of output 184 [2022-11-16 16:07:29,936 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-16 16:07:29,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:07:29,988 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2022-11-16 16:07:30,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:07:30,071 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 20 [2022-11-16 16:07:30,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:07:30,127 INFO L321 Elim1Store]: treesize reduction 40, result has 42.0 percent of original size [2022-11-16 16:07:30,128 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 85 [2022-11-16 16:07:30,169 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2022-11-16 16:07:30,183 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 16:07:30,293 INFO L197 IcfgInterpreter]: Interpreting procedure mapavg with input of size 12 for LOIs [2022-11-16 16:07:30,317 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 16:08:16,006 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2862#(and (<= 0 |#NULL.base|) (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~#x~0#1.offset|) (or (not (= |ULTIMATE.start_main_~ret2~0#1| |ULTIMATE.start_main_~ret~1#1|)) (not (= |ULTIMATE.start_main_~ret5~0#1| |ULTIMATE.start_main_~ret~1#1|))) (<= 0 (+ |ULTIMATE.start_main_~ret~1#1| 2147483648)) (<= |#NULL.offset| 0) (= |ULTIMATE.start_main_~temp~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 396 |ULTIMATE.start_main_~#x~0#1.offset|))) (exists ((v_mapavg_~ret~0_BEFORE_RETURN_35 Int)) (= |ULTIMATE.start_main_~ret5~0#1| (ite (<= (mod (ite (and (< v_mapavg_~ret~0_BEFORE_RETURN_35 0) (not (= (mod v_mapavg_~ret~0_BEFORE_RETURN_35 100) 0))) (+ (div v_mapavg_~ret~0_BEFORE_RETURN_35 100) 1) (div v_mapavg_~ret~0_BEFORE_RETURN_35 100)) 4294967296) 2147483647) (mod (ite (and (< v_mapavg_~ret~0_BEFORE_RETURN_35 0) (not (= (mod v_mapavg_~ret~0_BEFORE_RETURN_35 100) 0))) (+ (div v_mapavg_~ret~0_BEFORE_RETURN_35 100) 1) (div v_mapavg_~ret~0_BEFORE_RETURN_35 100)) 4294967296) (+ (mod (ite (and (< v_mapavg_~ret~0_BEFORE_RETURN_35 0) (not (= (mod v_mapavg_~ret~0_BEFORE_RETURN_35 100) 0))) (+ (div v_mapavg_~ret~0_BEFORE_RETURN_35 100) 1) (div v_mapavg_~ret~0_BEFORE_RETURN_35 100)) 4294967296) (- 4294967296))))) (<= |ULTIMATE.start_main_~ret~1#1| 2147483647) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (<= |#NULL.base| 0) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 99 |ULTIMATE.start_main_~i~2#1|) (<= 0 |#NULL.offset|) (<= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 |#StackHeapBarrier|) (<= 100 |ULTIMATE.start_main_~i~1#1|))' at error location [2022-11-16 16:08:16,006 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 16:08:16,006 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 16:08:16,006 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25, 26] total 51 [2022-11-16 16:08:16,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097740634] [2022-11-16 16:08:16,007 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 16:08:16,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-11-16 16:08:16,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:08:16,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-11-16 16:08:16,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1335, Invalid=2685, Unknown=12, NotChecked=0, Total=4032 [2022-11-16 16:08:16,010 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand has 51 states, 51 states have (on average 1.2745098039215685) internal successors, (65), 51 states have internal predecessors, (65), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-16 16:08:16,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:08:16,155 INFO L93 Difference]: Finished difference Result 100 states and 132 transitions. [2022-11-16 16:08:16,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-11-16 16:08:16,156 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 1.2745098039215685) internal successors, (65), 51 states have internal predecessors, (65), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 75 [2022-11-16 16:08:16,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:08:16,157 INFO L225 Difference]: With dead ends: 100 [2022-11-16 16:08:16,158 INFO L226 Difference]: Without dead ends: 75 [2022-11-16 16:08:16,160 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1057 ImplicationChecksByTransitivity, 46.9s TimeCoverageRelationStatistics Valid=1335, Invalid=2685, Unknown=12, NotChecked=0, Total=4032 [2022-11-16 16:08:16,160 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 16:08:16,161 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 84 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 16:08:16,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2022-11-16 16:08:16,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2022-11-16 16:08:16,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 70 states have (on average 1.042857142857143) internal successors, (73), 70 states have internal predecessors, (73), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 16:08:16,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 79 transitions. [2022-11-16 16:08:16,171 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 79 transitions. Word has length 75 [2022-11-16 16:08:16,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:08:16,172 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 79 transitions. [2022-11-16 16:08:16,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 1.2745098039215685) internal successors, (65), 51 states have internal predecessors, (65), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-16 16:08:16,172 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 79 transitions. [2022-11-16 16:08:16,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-11-16 16:08:16,174 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:08:16,174 INFO L195 NwaCegarLoop]: trace histogram [48, 30, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:08:16,186 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05297890-0f03-4ede-b80d-a3fa81978565/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-16 16:08:16,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05297890-0f03-4ede-b80d-a3fa81978565/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-16 16:08:16,381 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 16:08:16,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:08:16,382 INFO L85 PathProgramCache]: Analyzing trace with hash -1672402821, now seen corresponding path program 7 times [2022-11-16 16:08:16,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:08:16,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099326124] [2022-11-16 16:08:16,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:08:16,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:08:16,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:08:18,958 INFO L134 CoverageAnalysis]: Checked inductivity of 1713 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 537 trivial. 0 not checked. [2022-11-16 16:08:18,958 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:08:18,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099326124] [2022-11-16 16:08:18,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099326124] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 16:08:18,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [642780487] [2022-11-16 16:08:18,959 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-16 16:08:18,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:08:18,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05297890-0f03-4ede-b80d-a3fa81978565/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:08:18,960 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05297890-0f03-4ede-b80d-a3fa81978565/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 16:08:18,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05297890-0f03-4ede-b80d-a3fa81978565/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-16 16:08:19,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:08:19,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 720 conjuncts, 50 conjunts are in the unsatisfiable core [2022-11-16 16:08:19,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:08:19,289 INFO L134 CoverageAnalysis]: Checked inductivity of 1713 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 537 trivial. 0 not checked. [2022-11-16 16:08:19,289 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 16:08:22,526 INFO L134 CoverageAnalysis]: Checked inductivity of 1713 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 537 trivial. 0 not checked. [2022-11-16 16:08:22,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [642780487] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 16:08:22,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1699351424] [2022-11-16 16:08:22,528 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-11-16 16:08:22,528 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 16:08:22,529 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 16:08:22,529 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 16:08:22,529 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 16:08:22,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:08:22,562 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-16 16:08:22,562 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-11-16 16:08:22,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:08:22,576 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-16 16:08:22,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:08:22,597 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-16 16:08:22,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:08:22,638 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:08:22,663 INFO L321 Elim1Store]: treesize reduction 54, result has 28.0 percent of original size [2022-11-16 16:08:22,664 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 186 treesize of output 185 [2022-11-16 16:08:22,722 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 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-16 16:08:22,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:08:22,780 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2022-11-16 16:08:22,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:08:22,885 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:08:22,886 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2022-11-16 16:08:22,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:08:22,921 INFO L321 Elim1Store]: treesize reduction 45, result has 6.3 percent of original size [2022-11-16 16:08:22,922 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 80 treesize of output 72 [2022-11-16 16:08:22,949 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2022-11-16 16:08:22,964 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 16:08:23,066 INFO L197 IcfgInterpreter]: Interpreting procedure mapavg with input of size 12 for LOIs [2022-11-16 16:08:23,099 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 16:09:09,145 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3897#(and (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (or (not (= |ULTIMATE.start_main_~ret2~0#1| |ULTIMATE.start_main_~ret~1#1|)) (not (= |ULTIMATE.start_main_~ret5~0#1| |ULTIMATE.start_main_~ret~1#1|))) (<= 0 (+ |ULTIMATE.start_main_~ret~1#1| 2147483648)) (= |ULTIMATE.start_main_~temp~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 396 |ULTIMATE.start_main_~#x~0#1.offset|))) (<= |ULTIMATE.start_main_~ret~1#1| 2147483647) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (exists ((v_mapavg_~ret~0_BEFORE_RETURN_41 Int)) (= |ULTIMATE.start_main_~ret5~0#1| (ite (<= (mod (ite (and (< v_mapavg_~ret~0_BEFORE_RETURN_41 0) (not (= (mod v_mapavg_~ret~0_BEFORE_RETURN_41 100) 0))) (+ (div v_mapavg_~ret~0_BEFORE_RETURN_41 100) 1) (div v_mapavg_~ret~0_BEFORE_RETURN_41 100)) 4294967296) 2147483647) (mod (ite (and (< v_mapavg_~ret~0_BEFORE_RETURN_41 0) (not (= (mod v_mapavg_~ret~0_BEFORE_RETURN_41 100) 0))) (+ (div v_mapavg_~ret~0_BEFORE_RETURN_41 100) 1) (div v_mapavg_~ret~0_BEFORE_RETURN_41 100)) 4294967296) (+ (mod (ite (and (< v_mapavg_~ret~0_BEFORE_RETURN_41 0) (not (= (mod v_mapavg_~ret~0_BEFORE_RETURN_41 100) 0))) (+ (div v_mapavg_~ret~0_BEFORE_RETURN_41 100) 1) (div v_mapavg_~ret~0_BEFORE_RETURN_41 100)) 4294967296) (- 4294967296))))) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 99 |ULTIMATE.start_main_~i~2#1|) (<= 0 |#StackHeapBarrier|) (<= 100 |ULTIMATE.start_main_~i~1#1|) (= |#NULL.base| 0))' at error location [2022-11-16 16:09:09,145 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 16:09:09,145 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 16:09:09,145 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 50, 51] total 101 [2022-11-16 16:09:09,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814455972] [2022-11-16 16:09:09,145 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 16:09:09,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 101 states [2022-11-16 16:09:09,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:09:09,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2022-11-16 16:09:09,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5110, Invalid=7760, Unknown=12, NotChecked=0, Total=12882 [2022-11-16 16:09:09,154 INFO L87 Difference]: Start difference. First operand 75 states and 79 transitions. Second operand has 101 states, 101 states have (on average 1.1386138613861385) internal successors, (115), 101 states have internal predecessors, (115), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-16 16:09:09,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:09:09,500 INFO L93 Difference]: Finished difference Result 150 states and 207 transitions. [2022-11-16 16:09:09,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2022-11-16 16:09:09,501 INFO L78 Accepts]: Start accepts. Automaton has has 101 states, 101 states have (on average 1.1386138613861385) internal successors, (115), 101 states have internal predecessors, (115), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 100 [2022-11-16 16:09:09,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:09:09,503 INFO L225 Difference]: With dead ends: 150 [2022-11-16 16:09:09,503 INFO L226 Difference]: Without dead ends: 125 [2022-11-16 16:09:09,511 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2132 ImplicationChecksByTransitivity, 50.3s TimeCoverageRelationStatistics Valid=5110, Invalid=7760, Unknown=12, NotChecked=0, Total=12882 [2022-11-16 16:09:09,512 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 16:09:09,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 48 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 16:09:09,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2022-11-16 16:09:09,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2022-11-16 16:09:09,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 120 states have (on average 1.025) internal successors, (123), 120 states have internal predecessors, (123), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 16:09:09,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 129 transitions. [2022-11-16 16:09:09,548 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 129 transitions. Word has length 100 [2022-11-16 16:09:09,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:09:09,552 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 129 transitions. [2022-11-16 16:09:09,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 101 states, 101 states have (on average 1.1386138613861385) internal successors, (115), 101 states have internal predecessors, (115), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-16 16:09:09,553 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 129 transitions. [2022-11-16 16:09:09,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-11-16 16:09:09,558 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:09:09,559 INFO L195 NwaCegarLoop]: trace histogram [98, 30, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:09:09,576 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05297890-0f03-4ede-b80d-a3fa81978565/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-11-16 16:09:09,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05297890-0f03-4ede-b80d-a3fa81978565/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-16 16:09:09,766 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 16:09:09,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:09:09,767 INFO L85 PathProgramCache]: Analyzing trace with hash 139119099, now seen corresponding path program 8 times [2022-11-16 16:09:09,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:09:09,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975249234] [2022-11-16 16:09:09,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:09:09,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:09:09,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:09:18,315 INFO L134 CoverageAnalysis]: Checked inductivity of 5388 backedges. 0 proven. 4851 refuted. 0 times theorem prover too weak. 537 trivial. 0 not checked. [2022-11-16 16:09:18,315 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:09:18,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975249234] [2022-11-16 16:09:18,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975249234] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 16:09:18,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [125935528] [2022-11-16 16:09:18,316 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 16:09:18,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:09:18,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05297890-0f03-4ede-b80d-a3fa81978565/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:09:18,317 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05297890-0f03-4ede-b80d-a3fa81978565/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 16:09:18,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05297890-0f03-4ede-b80d-a3fa81978565/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-16 16:09:18,504 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-16 16:09:18,505 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 16:09:18,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 16:09:18,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:09:18,722 INFO L134 CoverageAnalysis]: Checked inductivity of 5388 backedges. 246 proven. 3 refuted. 0 times theorem prover too weak. 5139 trivial. 0 not checked. [2022-11-16 16:09:18,722 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 16:09:18,919 INFO L134 CoverageAnalysis]: Checked inductivity of 5388 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5385 trivial. 0 not checked. [2022-11-16 16:09:18,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [125935528] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 16:09:18,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1598739369] [2022-11-16 16:09:18,922 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-11-16 16:09:18,922 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 16:09:18,923 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 16:09:18,923 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 16:09:18,923 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 16:09:18,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:09:18,954 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 16:09:18,955 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 26 [2022-11-16 16:09:18,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:09:18,987 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-16 16:09:18,987 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-11-16 16:09:19,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:09:19,009 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 33 [2022-11-16 16:09:19,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:09:19,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:09:19,076 INFO L321 Elim1Store]: treesize reduction 49, result has 12.5 percent of original size [2022-11-16 16:09:19,077 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 196 treesize of output 184 [2022-11-16 16:09:19,119 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-16 16:09:19,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:09:19,171 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2022-11-16 16:09:19,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:09:19,254 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:09:19,255 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2022-11-16 16:09:19,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:09:19,296 INFO L321 Elim1Store]: treesize reduction 45, result has 6.3 percent of original size [2022-11-16 16:09:19,296 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 80 treesize of output 72 [2022-11-16 16:09:19,325 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2022-11-16 16:09:19,338 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 16:09:19,440 INFO L197 IcfgInterpreter]: Interpreting procedure mapavg with input of size 12 for LOIs [2022-11-16 16:09:19,469 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 16:09:45,316 WARN L233 SmtUtils]: Spent 10.12s on a formula simplification. DAG size of input: 70 DAG size of output: 45 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 16:10:10,812 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5438#(and (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~#x~0#1.offset|) (or (not (= |ULTIMATE.start_main_~ret2~0#1| |ULTIMATE.start_main_~ret~1#1|)) (not (= |ULTIMATE.start_main_~ret5~0#1| |ULTIMATE.start_main_~ret~1#1|))) (<= 0 (+ |ULTIMATE.start_main_~ret~1#1| 2147483648)) (exists ((v_mapavg_~ret~0_BEFORE_RETURN_48 Int)) (= |ULTIMATE.start_main_~ret5~0#1| (ite (<= (mod (ite (and (< v_mapavg_~ret~0_BEFORE_RETURN_48 0) (not (= (mod v_mapavg_~ret~0_BEFORE_RETURN_48 100) 0))) (+ (div v_mapavg_~ret~0_BEFORE_RETURN_48 100) 1) (div v_mapavg_~ret~0_BEFORE_RETURN_48 100)) 4294967296) 2147483647) (mod (ite (and (< v_mapavg_~ret~0_BEFORE_RETURN_48 0) (not (= (mod v_mapavg_~ret~0_BEFORE_RETURN_48 100) 0))) (+ (div v_mapavg_~ret~0_BEFORE_RETURN_48 100) 1) (div v_mapavg_~ret~0_BEFORE_RETURN_48 100)) 4294967296) (+ (mod (ite (and (< v_mapavg_~ret~0_BEFORE_RETURN_48 0) (not (= (mod v_mapavg_~ret~0_BEFORE_RETURN_48 100) 0))) (+ (div v_mapavg_~ret~0_BEFORE_RETURN_48 100) 1) (div v_mapavg_~ret~0_BEFORE_RETURN_48 100)) 4294967296) (- 4294967296))))) (<= |#NULL.offset| 0) (= |ULTIMATE.start_main_~temp~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 396 |ULTIMATE.start_main_~#x~0#1.offset|))) (<= |ULTIMATE.start_main_~ret~1#1| 2147483647) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 99 |ULTIMATE.start_main_~i~2#1|) (<= 0 |#NULL.offset|) (<= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 |#StackHeapBarrier|) (<= 100 |ULTIMATE.start_main_~i~1#1|) (= |#NULL.base| 0))' at error location [2022-11-16 16:10:10,812 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 16:10:10,812 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 16:10:10,812 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 5, 5] total 107 [2022-11-16 16:10:10,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783770698] [2022-11-16 16:10:10,812 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 16:10:10,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 107 states [2022-11-16 16:10:10,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:10:10,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2022-11-16 16:10:10,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5137, Invalid=9132, Unknown=11, NotChecked=0, Total=14280 [2022-11-16 16:10:10,819 INFO L87 Difference]: Start difference. First operand 125 states and 129 transitions. Second operand has 107 states, 107 states have (on average 1.1682242990654206) internal successors, (125), 107 states have internal predecessors, (125), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-16 16:10:11,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:10:11,049 INFO L93 Difference]: Finished difference Result 155 states and 167 transitions. [2022-11-16 16:10:11,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2022-11-16 16:10:11,050 INFO L78 Accepts]: Start accepts. Automaton has has 107 states, 107 states have (on average 1.1682242990654206) internal successors, (125), 107 states have internal predecessors, (125), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 150 [2022-11-16 16:10:11,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:10:11,052 INFO L225 Difference]: With dead ends: 155 [2022-11-16 16:10:11,052 INFO L226 Difference]: Without dead ends: 130 [2022-11-16 16:10:11,056 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 549 GetRequests, 431 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1982 ImplicationChecksByTransitivity, 56.5s TimeCoverageRelationStatistics Valid=5137, Invalid=9132, Unknown=11, NotChecked=0, Total=14280 [2022-11-16 16:10:11,057 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 16:10:11,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 81 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 16:10:11,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2022-11-16 16:10:11,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2022-11-16 16:10:11,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 125 states have (on average 1.024) internal successors, (128), 125 states have internal predecessors, (128), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 16:10:11,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 134 transitions. [2022-11-16 16:10:11,086 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 134 transitions. Word has length 150 [2022-11-16 16:10:11,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:10:11,087 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 134 transitions. [2022-11-16 16:10:11,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 107 states, 107 states have (on average 1.1682242990654206) internal successors, (125), 107 states have internal predecessors, (125), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-16 16:10:11,087 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 134 transitions. [2022-11-16 16:10:11,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-11-16 16:10:11,096 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:10:11,096 INFO L195 NwaCegarLoop]: trace histogram [99, 30, 6, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:10:11,107 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05297890-0f03-4ede-b80d-a3fa81978565/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-16 16:10:11,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05297890-0f03-4ede-b80d-a3fa81978565/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-16 16:10:11,307 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 16:10:11,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:10:11,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1895565543, now seen corresponding path program 9 times [2022-11-16 16:10:11,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:10:11,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702175506] [2022-11-16 16:10:11,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:10:11,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:10:11,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:10:19,134 INFO L134 CoverageAnalysis]: Checked inductivity of 5505 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 555 trivial. 0 not checked. [2022-11-16 16:10:19,134 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:10:19,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702175506] [2022-11-16 16:10:19,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702175506] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 16:10:19,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [375897465] [2022-11-16 16:10:19,135 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 16:10:19,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:10:19,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05297890-0f03-4ede-b80d-a3fa81978565/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:10:19,136 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05297890-0f03-4ede-b80d-a3fa81978565/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 16:10:19,137 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05297890-0f03-4ede-b80d-a3fa81978565/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-16 16:10:19,498 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-16 16:10:19,498 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 16:10:19,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 1207 conjuncts, 101 conjunts are in the unsatisfiable core [2022-11-16 16:10:19,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:10:19,728 INFO L134 CoverageAnalysis]: Checked inductivity of 5505 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 555 trivial. 0 not checked. [2022-11-16 16:10:19,729 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 16:10:24,780 INFO L134 CoverageAnalysis]: Checked inductivity of 5505 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 555 trivial. 0 not checked. [2022-11-16 16:10:24,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [375897465] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 16:10:24,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [755609541] [2022-11-16 16:10:24,783 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-11-16 16:10:24,783 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 16:10:24,784 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 16:10:24,784 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 16:10:24,785 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 16:10:24,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:10:24,813 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 16:10:24,814 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 26 [2022-11-16 16:10:24,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:10:24,843 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-16 16:10:24,843 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-11-16 16:10:24,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:10:24,863 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 33 [2022-11-16 16:10:24,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:10:24,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:10:24,917 INFO L321 Elim1Store]: treesize reduction 49, result has 12.5 percent of original size [2022-11-16 16:10:24,918 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 196 treesize of output 184 [2022-11-16 16:10:24,957 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-16 16:10:25,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:10:25,019 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2022-11-16 16:10:25,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:10:25,101 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:10:25,102 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2022-11-16 16:10:25,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:10:25,144 INFO L321 Elim1Store]: treesize reduction 45, result has 6.3 percent of original size [2022-11-16 16:10:25,144 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 80 treesize of output 72 [2022-11-16 16:10:25,168 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2022-11-16 16:10:25,182 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 16:10:25,281 INFO L197 IcfgInterpreter]: Interpreting procedure mapavg with input of size 12 for LOIs [2022-11-16 16:10:25,304 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 16:11:12,020 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '7025#(and (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (exists ((v_mapavg_~ret~0_BEFORE_RETURN_53 Int)) (= |ULTIMATE.start_main_~ret5~0#1| (ite (<= (mod (ite (and (not (= (mod v_mapavg_~ret~0_BEFORE_RETURN_53 100) 0)) (< v_mapavg_~ret~0_BEFORE_RETURN_53 0)) (+ (div v_mapavg_~ret~0_BEFORE_RETURN_53 100) 1) (div v_mapavg_~ret~0_BEFORE_RETURN_53 100)) 4294967296) 2147483647) (mod (ite (and (not (= (mod v_mapavg_~ret~0_BEFORE_RETURN_53 100) 0)) (< v_mapavg_~ret~0_BEFORE_RETURN_53 0)) (+ (div v_mapavg_~ret~0_BEFORE_RETURN_53 100) 1) (div v_mapavg_~ret~0_BEFORE_RETURN_53 100)) 4294967296) (+ (- 4294967296) (mod (ite (and (not (= (mod v_mapavg_~ret~0_BEFORE_RETURN_53 100) 0)) (< v_mapavg_~ret~0_BEFORE_RETURN_53 0)) (+ (div v_mapavg_~ret~0_BEFORE_RETURN_53 100) 1) (div v_mapavg_~ret~0_BEFORE_RETURN_53 100)) 4294967296))))) (or (not (= |ULTIMATE.start_main_~ret2~0#1| |ULTIMATE.start_main_~ret~1#1|)) (not (= |ULTIMATE.start_main_~ret5~0#1| |ULTIMATE.start_main_~ret~1#1|))) (<= 0 (+ |ULTIMATE.start_main_~ret~1#1| 2147483648)) (= |ULTIMATE.start_main_~temp~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 396 |ULTIMATE.start_main_~#x~0#1.offset|))) (<= |ULTIMATE.start_main_~ret~1#1| 2147483647) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 99 |ULTIMATE.start_main_~i~2#1|) (<= 0 |#StackHeapBarrier|) (<= 100 |ULTIMATE.start_main_~i~1#1|) (= |#NULL.base| 0))' at error location [2022-11-16 16:11:12,021 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 16:11:12,021 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 16:11:12,021 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [102, 101, 102] total 103 [2022-11-16 16:11:12,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093375384] [2022-11-16 16:11:12,021 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 16:11:12,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 103 states [2022-11-16 16:11:12,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:11:12,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2022-11-16 16:11:12,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5313, Invalid=8015, Unknown=12, NotChecked=0, Total=13340 [2022-11-16 16:11:12,025 INFO L87 Difference]: Start difference. First operand 130 states and 134 transitions. Second operand has 103 states, 103 states have (on average 1.1262135922330097) internal successors, (116), 103 states have internal predecessors, (116), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-16 16:11:12,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:11:12,202 INFO L93 Difference]: Finished difference Result 160 states and 168 transitions. [2022-11-16 16:11:12,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2022-11-16 16:11:12,203 INFO L78 Accepts]: Start accepts. Automaton has has 103 states, 103 states have (on average 1.1262135922330097) internal successors, (116), 103 states have internal predecessors, (116), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 155 [2022-11-16 16:11:12,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:11:12,204 INFO L225 Difference]: With dead ends: 160 [2022-11-16 16:11:12,204 INFO L226 Difference]: Without dead ends: 131 [2022-11-16 16:11:12,206 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 565 GetRequests, 351 SyntacticMatches, 100 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6782 ImplicationChecksByTransitivity, 56.2s TimeCoverageRelationStatistics Valid=5313, Invalid=8015, Unknown=12, NotChecked=0, Total=13340 [2022-11-16 16:11:12,207 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 16:11:12,207 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 72 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 16:11:12,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2022-11-16 16:11:12,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2022-11-16 16:11:12,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 126 states have (on average 1.0238095238095237) internal successors, (129), 126 states have internal predecessors, (129), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 16:11:12,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 135 transitions. [2022-11-16 16:11:12,239 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 135 transitions. Word has length 155 [2022-11-16 16:11:12,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:11:12,241 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 135 transitions. [2022-11-16 16:11:12,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 103 states, 103 states have (on average 1.1262135922330097) internal successors, (116), 103 states have internal predecessors, (116), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-16 16:11:12,241 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 135 transitions. [2022-11-16 16:11:12,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-16 16:11:12,243 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:11:12,243 INFO L195 NwaCegarLoop]: trace histogram [100, 30, 6, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:11:12,255 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05297890-0f03-4ede-b80d-a3fa81978565/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-11-16 16:11:12,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05297890-0f03-4ede-b80d-a3fa81978565/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:11:12,450 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 16:11:12,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:11:12,451 INFO L85 PathProgramCache]: Analyzing trace with hash 609584251, now seen corresponding path program 10 times [2022-11-16 16:11:12,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:11:12,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135439310] [2022-11-16 16:11:12,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:11:12,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:11:12,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:11:12,905 INFO L134 CoverageAnalysis]: Checked inductivity of 5605 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 5584 trivial. 0 not checked. [2022-11-16 16:11:12,905 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:11:12,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135439310] [2022-11-16 16:11:12,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135439310] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 16:11:12,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1122799961] [2022-11-16 16:11:12,906 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-16 16:11:12,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:11:12,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05297890-0f03-4ede-b80d-a3fa81978565/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:11:12,908 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05297890-0f03-4ede-b80d-a3fa81978565/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 16:11:12,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05297890-0f03-4ede-b80d-a3fa81978565/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-16 16:11:13,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:11:13,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 1216 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-16 16:11:13,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:11:13,488 INFO L134 CoverageAnalysis]: Checked inductivity of 5605 backedges. 244 proven. 55 refuted. 0 times theorem prover too weak. 5306 trivial. 0 not checked. [2022-11-16 16:11:13,488 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 16:11:13,765 INFO L134 CoverageAnalysis]: Checked inductivity of 5605 backedges. 0 proven. 299 refuted. 0 times theorem prover too weak. 5306 trivial. 0 not checked. [2022-11-16 16:11:13,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1122799961] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 16:11:13,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [174069559] [2022-11-16 16:11:13,768 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-11-16 16:11:13,768 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 16:11:13,768 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 16:11:13,768 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 16:11:13,768 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 16:11:13,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:11:13,791 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 16:11:13,791 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 26 [2022-11-16 16:11:13,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:11:13,818 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-16 16:11:13,818 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-11-16 16:11:13,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:11:13,837 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-16 16:11:13,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:11:13,876 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:11:13,904 INFO L321 Elim1Store]: treesize reduction 54, result has 28.0 percent of original size [2022-11-16 16:11:13,904 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 186 treesize of output 185 [2022-11-16 16:11:13,962 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 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-16 16:11:14,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:11:14,013 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2022-11-16 16:11:14,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:11:14,103 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:11:14,104 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2022-11-16 16:11:14,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:11:14,143 INFO L321 Elim1Store]: treesize reduction 45, result has 6.3 percent of original size [2022-11-16 16:11:14,144 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 80 treesize of output 72 [2022-11-16 16:11:14,171 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2022-11-16 16:11:14,185 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 16:11:14,281 INFO L197 IcfgInterpreter]: Interpreting procedure mapavg with input of size 12 for LOIs [2022-11-16 16:11:14,321 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 16:11:59,860 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8558#(and (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (or (not (= |ULTIMATE.start_main_~ret2~0#1| |ULTIMATE.start_main_~ret~1#1|)) (not (= |ULTIMATE.start_main_~ret5~0#1| |ULTIMATE.start_main_~ret~1#1|))) (<= 0 (+ |ULTIMATE.start_main_~ret~1#1| 2147483648)) (<= |#NULL.offset| 0) (= |ULTIMATE.start_main_~temp~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 396 |ULTIMATE.start_main_~#x~0#1.offset|))) (<= |ULTIMATE.start_main_~ret~1#1| 2147483647) (exists ((v_mapavg_~ret~0_BEFORE_RETURN_60 Int)) (= |ULTIMATE.start_main_~ret5~0#1| (ite (<= (mod (ite (and (< v_mapavg_~ret~0_BEFORE_RETURN_60 0) (not (= (mod v_mapavg_~ret~0_BEFORE_RETURN_60 100) 0))) (+ (div v_mapavg_~ret~0_BEFORE_RETURN_60 100) 1) (div v_mapavg_~ret~0_BEFORE_RETURN_60 100)) 4294967296) 2147483647) (mod (ite (and (< v_mapavg_~ret~0_BEFORE_RETURN_60 0) (not (= (mod v_mapavg_~ret~0_BEFORE_RETURN_60 100) 0))) (+ (div v_mapavg_~ret~0_BEFORE_RETURN_60 100) 1) (div v_mapavg_~ret~0_BEFORE_RETURN_60 100)) 4294967296) (+ (- 4294967296) (mod (ite (and (< v_mapavg_~ret~0_BEFORE_RETURN_60 0) (not (= (mod v_mapavg_~ret~0_BEFORE_RETURN_60 100) 0))) (+ (div v_mapavg_~ret~0_BEFORE_RETURN_60 100) 1) (div v_mapavg_~ret~0_BEFORE_RETURN_60 100)) 4294967296))))) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 99 |ULTIMATE.start_main_~i~2#1|) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|) (<= 100 |ULTIMATE.start_main_~i~1#1|) (= |#NULL.base| 0))' at error location [2022-11-16 16:11:59,860 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 16:11:59,861 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 16:11:59,861 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 13] total 31 [2022-11-16 16:11:59,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872260354] [2022-11-16 16:11:59,861 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 16:11:59,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-16 16:11:59,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:11:59,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-16 16:11:59,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=371, Invalid=1509, Unknown=12, NotChecked=0, Total=1892 [2022-11-16 16:11:59,863 INFO L87 Difference]: Start difference. First operand 131 states and 135 transitions. Second operand has 31 states, 31 states have (on average 1.5806451612903225) internal successors, (49), 31 states have internal predecessors, (49), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-16 16:11:59,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:11:59,922 INFO L93 Difference]: Finished difference Result 172 states and 194 transitions. [2022-11-16 16:11:59,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-16 16:11:59,923 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.5806451612903225) internal successors, (49), 31 states have internal predecessors, (49), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 156 [2022-11-16 16:11:59,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:11:59,924 INFO L225 Difference]: With dead ends: 172 [2022-11-16 16:11:59,924 INFO L226 Difference]: Without dead ends: 144 [2022-11-16 16:11:59,925 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 475 GetRequests, 433 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 642 ImplicationChecksByTransitivity, 46.0s TimeCoverageRelationStatistics Valid=371, Invalid=1509, Unknown=12, NotChecked=0, Total=1892 [2022-11-16 16:11:59,925 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 16:11:59,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 45 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 16:11:59,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2022-11-16 16:11:59,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2022-11-16 16:11:59,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 139 states have (on average 1.0215827338129497) internal successors, (142), 139 states have internal predecessors, (142), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 16:11:59,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 148 transitions. [2022-11-16 16:11:59,934 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 148 transitions. Word has length 156 [2022-11-16 16:11:59,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:11:59,934 INFO L495 AbstractCegarLoop]: Abstraction has 144 states and 148 transitions. [2022-11-16 16:11:59,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 1.5806451612903225) internal successors, (49), 31 states have internal predecessors, (49), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-16 16:11:59,934 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 148 transitions. [2022-11-16 16:11:59,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2022-11-16 16:11:59,937 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:11:59,937 INFO L195 NwaCegarLoop]: trace histogram [100, 66, 7, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:11:59,946 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05297890-0f03-4ede-b80d-a3fa81978565/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-11-16 16:12:00,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05297890-0f03-4ede-b80d-a3fa81978565/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-16 16:12:00,144 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 16:12:00,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:12:00,145 INFO L85 PathProgramCache]: Analyzing trace with hash 2056803759, now seen corresponding path program 11 times [2022-11-16 16:12:00,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:12:00,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021634907] [2022-11-16 16:12:00,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:12:00,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:12:00,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:12:00,709 INFO L134 CoverageAnalysis]: Checked inductivity of 7430 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 7402 trivial. 0 not checked. [2022-11-16 16:12:00,710 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:12:00,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021634907] [2022-11-16 16:12:00,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021634907] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 16:12:00,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [768963123] [2022-11-16 16:12:00,710 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 16:12:00,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:12:00,711 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05297890-0f03-4ede-b80d-a3fa81978565/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:12:00,715 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05297890-0f03-4ede-b80d-a3fa81978565/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 16:12:00,742 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05297890-0f03-4ede-b80d-a3fa81978565/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-16 16:12:01,293 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-11-16 16:12:01,293 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 16:12:01,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-16 16:12:01,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:12:01,326 INFO L134 CoverageAnalysis]: Checked inductivity of 7430 backedges. 1062 proven. 28 refuted. 0 times theorem prover too weak. 6340 trivial. 0 not checked. [2022-11-16 16:12:01,326 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 16:12:01,457 INFO L134 CoverageAnalysis]: Checked inductivity of 7430 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 7402 trivial. 0 not checked. [2022-11-16 16:12:01,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [768963123] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 16:12:01,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1423432175] [2022-11-16 16:12:01,459 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-11-16 16:12:01,460 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 16:12:01,460 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 16:12:01,460 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 16:12:01,460 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 16:12:01,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:12:01,495 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-16 16:12:01,495 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-11-16 16:12:01,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:12:01,503 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-16 16:12:01,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:12:01,518 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-16 16:12:01,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:12:01,557 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:12:01,589 INFO L321 Elim1Store]: treesize reduction 54, result has 28.0 percent of original size [2022-11-16 16:12:01,590 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 186 treesize of output 185 [2022-11-16 16:12:01,650 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-16 16:12:01,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:12:01,714 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2022-11-16 16:12:01,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:12:01,812 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 20 [2022-11-16 16:12:01,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:12:01,859 INFO L321 Elim1Store]: treesize reduction 45, result has 34.8 percent of original size [2022-11-16 16:12:01,859 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 80 [2022-11-16 16:12:01,903 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2022-11-16 16:12:01,915 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 16:12:02,017 INFO L197 IcfgInterpreter]: Interpreting procedure mapavg with input of size 12 for LOIs [2022-11-16 16:12:02,040 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 16:12:47,244 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '10351#(and (<= 0 |#NULL.base|) (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~#x~0#1.offset|) (or (not (= |ULTIMATE.start_main_~ret2~0#1| |ULTIMATE.start_main_~ret~1#1|)) (not (= |ULTIMATE.start_main_~ret5~0#1| |ULTIMATE.start_main_~ret~1#1|))) (<= 0 (+ |ULTIMATE.start_main_~ret~1#1| 2147483648)) (<= |#NULL.offset| 0) (= |ULTIMATE.start_main_~temp~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 396 |ULTIMATE.start_main_~#x~0#1.offset|))) (<= |ULTIMATE.start_main_~ret~1#1| 2147483647) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (<= |#NULL.base| 0) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 99 |ULTIMATE.start_main_~i~2#1|) (<= 0 |#NULL.offset|) (<= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 |#StackHeapBarrier|) (<= 100 |ULTIMATE.start_main_~i~1#1|) (exists ((v_mapavg_~ret~0_BEFORE_RETURN_66 Int)) (= |ULTIMATE.start_main_~ret5~0#1| (ite (<= (mod (ite (and (not (= (mod v_mapavg_~ret~0_BEFORE_RETURN_66 100) 0)) (< v_mapavg_~ret~0_BEFORE_RETURN_66 0)) (+ (div v_mapavg_~ret~0_BEFORE_RETURN_66 100) 1) (div v_mapavg_~ret~0_BEFORE_RETURN_66 100)) 4294967296) 2147483647) (mod (ite (and (not (= (mod v_mapavg_~ret~0_BEFORE_RETURN_66 100) 0)) (< v_mapavg_~ret~0_BEFORE_RETURN_66 0)) (+ (div v_mapavg_~ret~0_BEFORE_RETURN_66 100) 1) (div v_mapavg_~ret~0_BEFORE_RETURN_66 100)) 4294967296) (+ (mod (ite (and (not (= (mod v_mapavg_~ret~0_BEFORE_RETURN_66 100) 0)) (< v_mapavg_~ret~0_BEFORE_RETURN_66 0)) (+ (div v_mapavg_~ret~0_BEFORE_RETURN_66 100) 1) (div v_mapavg_~ret~0_BEFORE_RETURN_66 100)) 4294967296) (- 4294967296))))))' at error location [2022-11-16 16:12:47,244 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 16:12:47,244 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 16:12:47,244 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 19 [2022-11-16 16:12:47,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724679101] [2022-11-16 16:12:47,244 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 16:12:47,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 16:12:47,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:12:47,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 16:12:47,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=749, Unknown=12, NotChecked=0, Total=992 [2022-11-16 16:12:47,246 INFO L87 Difference]: Start difference. First operand 144 states and 148 transitions. Second operand has 19 states, 19 states have (on average 1.736842105263158) internal successors, (33), 19 states have internal predecessors, (33), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-16 16:12:47,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:12:47,295 INFO L93 Difference]: Finished difference Result 183 states and 196 transitions. [2022-11-16 16:12:47,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-16 16:12:47,296 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.736842105263158) internal successors, (33), 19 states have internal predecessors, (33), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 193 [2022-11-16 16:12:47,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:12:47,297 INFO L225 Difference]: With dead ends: 183 [2022-11-16 16:12:47,297 INFO L226 Difference]: Without dead ends: 153 [2022-11-16 16:12:47,298 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 587 GetRequests, 557 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 369 ImplicationChecksByTransitivity, 45.3s TimeCoverageRelationStatistics Valid=231, Invalid=749, Unknown=12, NotChecked=0, Total=992 [2022-11-16 16:12:47,298 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 16:12:47,299 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 56 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 16:12:47,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2022-11-16 16:12:47,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2022-11-16 16:12:47,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 148 states have (on average 1.0202702702702702) internal successors, (151), 148 states have internal predecessors, (151), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 16:12:47,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 157 transitions. [2022-11-16 16:12:47,307 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 157 transitions. Word has length 193 [2022-11-16 16:12:47,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:12:47,308 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 157 transitions. [2022-11-16 16:12:47,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.736842105263158) internal successors, (33), 19 states have internal predecessors, (33), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-16 16:12:47,308 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 157 transitions. [2022-11-16 16:12:47,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2022-11-16 16:12:47,312 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:12:47,312 INFO L195 NwaCegarLoop]: trace histogram [100, 66, 16, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:12:47,323 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05297890-0f03-4ede-b80d-a3fa81978565/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-16 16:12:47,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05297890-0f03-4ede-b80d-a3fa81978565/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-16 16:12:47,519 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 16:12:47,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:12:47,519 INFO L85 PathProgramCache]: Analyzing trace with hash 404956347, now seen corresponding path program 12 times [2022-11-16 16:12:47,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:12:47,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578877404] [2022-11-16 16:12:47,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:12:47,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:12:47,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:12:48,490 INFO L134 CoverageAnalysis]: Checked inductivity of 7538 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 7402 trivial. 0 not checked. [2022-11-16 16:12:48,491 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:12:48,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578877404] [2022-11-16 16:12:48,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578877404] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 16:12:48,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [535291903] [2022-11-16 16:12:48,491 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 16:12:48,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:12:48,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05297890-0f03-4ede-b80d-a3fa81978565/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:12:48,495 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05297890-0f03-4ede-b80d-a3fa81978565/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 16:12:48,522 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05297890-0f03-4ede-b80d-a3fa81978565/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-16 16:12:48,993 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-16 16:12:48,993 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 16:12:48,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 1466 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-16 16:12:49,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:12:49,484 INFO L134 CoverageAnalysis]: Checked inductivity of 7538 backedges. 1060 proven. 253 refuted. 0 times theorem prover too weak. 6225 trivial. 0 not checked. [2022-11-16 16:12:49,484 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 16:12:50,535 INFO L134 CoverageAnalysis]: Checked inductivity of 7538 backedges. 0 proven. 1313 refuted. 0 times theorem prover too weak. 6225 trivial. 0 not checked. [2022-11-16 16:12:50,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [535291903] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 16:12:50,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [311855572] [2022-11-16 16:12:50,537 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-11-16 16:12:50,537 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 16:12:50,537 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 16:12:50,538 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 16:12:50,538 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 16:12:50,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:12:50,566 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-16 16:12:50,566 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-11-16 16:12:50,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:12:50,575 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-16 16:12:50,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:12:50,591 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-16 16:12:50,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:12:50,628 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:12:50,655 INFO L321 Elim1Store]: treesize reduction 54, result has 28.0 percent of original size [2022-11-16 16:12:50,656 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 186 treesize of output 185 [2022-11-16 16:12:50,713 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-16 16:12:50,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:12:50,760 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2022-11-16 16:12:50,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:12:50,835 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 20 [2022-11-16 16:12:50,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:12:50,883 INFO L321 Elim1Store]: treesize reduction 40, result has 42.0 percent of original size [2022-11-16 16:12:50,884 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 85 [2022-11-16 16:12:50,920 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2022-11-16 16:12:50,930 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 16:12:51,025 INFO L197 IcfgInterpreter]: Interpreting procedure mapavg with input of size 12 for LOIs [2022-11-16 16:12:51,049 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 16:13:15,997 WARN L233 SmtUtils]: Spent 10.10s on a formula simplification. DAG size of input: 70 DAG size of output: 45 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 16:13:42,822 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '12286#(and (exists ((v_mapavg_~ret~0_BEFORE_RETURN_71 Int)) (= |ULTIMATE.start_main_~ret5~0#1| (ite (<= (mod (ite (and (< v_mapavg_~ret~0_BEFORE_RETURN_71 0) (not (= (mod v_mapavg_~ret~0_BEFORE_RETURN_71 100) 0))) (+ (div v_mapavg_~ret~0_BEFORE_RETURN_71 100) 1) (div v_mapavg_~ret~0_BEFORE_RETURN_71 100)) 4294967296) 2147483647) (mod (ite (and (< v_mapavg_~ret~0_BEFORE_RETURN_71 0) (not (= (mod v_mapavg_~ret~0_BEFORE_RETURN_71 100) 0))) (+ (div v_mapavg_~ret~0_BEFORE_RETURN_71 100) 1) (div v_mapavg_~ret~0_BEFORE_RETURN_71 100)) 4294967296) (+ (mod (ite (and (< v_mapavg_~ret~0_BEFORE_RETURN_71 0) (not (= (mod v_mapavg_~ret~0_BEFORE_RETURN_71 100) 0))) (+ (div v_mapavg_~ret~0_BEFORE_RETURN_71 100) 1) (div v_mapavg_~ret~0_BEFORE_RETURN_71 100)) 4294967296) (- 4294967296))))) (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~#x~0#1.offset|) (or (not (= |ULTIMATE.start_main_~ret2~0#1| |ULTIMATE.start_main_~ret~1#1|)) (not (= |ULTIMATE.start_main_~ret5~0#1| |ULTIMATE.start_main_~ret~1#1|))) (<= 0 (+ |ULTIMATE.start_main_~ret~1#1| 2147483648)) (<= |#NULL.offset| 0) (= |ULTIMATE.start_main_~temp~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 396 |ULTIMATE.start_main_~#x~0#1.offset|))) (<= |ULTIMATE.start_main_~ret~1#1| 2147483647) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 99 |ULTIMATE.start_main_~i~2#1|) (<= 0 |#NULL.offset|) (<= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 |#StackHeapBarrier|) (<= 100 |ULTIMATE.start_main_~i~1#1|) (= |#NULL.base| 0))' at error location [2022-11-16 16:13:42,822 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 16:13:42,822 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 16:13:42,822 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 25, 25] total 65 [2022-11-16 16:13:42,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797071243] [2022-11-16 16:13:42,822 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 16:13:42,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2022-11-16 16:13:42,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:13:42,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2022-11-16 16:13:42,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1358, Invalid=4636, Unknown=12, NotChecked=0, Total=6006 [2022-11-16 16:13:42,825 INFO L87 Difference]: Start difference. First operand 153 states and 157 transitions. Second operand has 65 states, 65 states have (on average 1.2769230769230768) internal successors, (83), 65 states have internal predecessors, (83), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-16 16:13:42,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:13:42,969 INFO L93 Difference]: Finished difference Result 228 states and 262 transitions. [2022-11-16 16:13:42,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-11-16 16:13:42,969 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 1.2769230769230768) internal successors, (83), 65 states have internal predecessors, (83), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 202 [2022-11-16 16:13:42,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:13:42,971 INFO L225 Difference]: With dead ends: 228 [2022-11-16 16:13:42,971 INFO L226 Difference]: Without dead ends: 178 [2022-11-16 16:13:42,972 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 623 GetRequests, 547 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1844 ImplicationChecksByTransitivity, 53.3s TimeCoverageRelationStatistics Valid=1358, Invalid=4636, Unknown=12, NotChecked=0, Total=6006 [2022-11-16 16:13:42,972 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 16:13:42,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 122 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 16:13:42,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2022-11-16 16:13:42,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2022-11-16 16:13:42,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 173 states have (on average 1.0173410404624277) internal successors, (176), 173 states have internal predecessors, (176), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 16:13:42,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 182 transitions. [2022-11-16 16:13:42,986 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 182 transitions. Word has length 202 [2022-11-16 16:13:42,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:13:42,986 INFO L495 AbstractCegarLoop]: Abstraction has 178 states and 182 transitions. [2022-11-16 16:13:42,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 1.2769230769230768) internal successors, (83), 65 states have internal predecessors, (83), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-16 16:13:42,986 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 182 transitions. [2022-11-16 16:13:42,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2022-11-16 16:13:42,990 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:13:42,991 INFO L195 NwaCegarLoop]: trace histogram [138, 100, 17, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:13:43,002 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05297890-0f03-4ede-b80d-a3fa81978565/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-16 16:13:43,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05297890-0f03-4ede-b80d-a3fa81978565/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-16 16:13:43,203 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 16:13:43,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:13:43,203 INFO L85 PathProgramCache]: Analyzing trace with hash -1706317649, now seen corresponding path program 13 times [2022-11-16 16:13:43,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:13:43,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098976974] [2022-11-16 16:13:43,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:13:43,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:13:43,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:13:44,411 INFO L134 CoverageAnalysis]: Checked inductivity of 15079 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 14926 trivial. 0 not checked. [2022-11-16 16:13:44,411 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:13:44,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098976974] [2022-11-16 16:13:44,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098976974] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 16:13:44,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [873372147] [2022-11-16 16:13:44,412 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-16 16:13:44,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:13:44,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05297890-0f03-4ede-b80d-a3fa81978565/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:13:44,414 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05297890-0f03-4ede-b80d-a3fa81978565/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 16:13:44,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05297890-0f03-4ede-b80d-a3fa81978565/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-16 16:13:45,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:13:45,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 1833 conjuncts, 48 conjunts are in the unsatisfiable core [2022-11-16 16:13:45,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:13:46,555 INFO L134 CoverageAnalysis]: Checked inductivity of 15079 backedges. 4420 proven. 1081 refuted. 0 times theorem prover too weak. 9578 trivial. 0 not checked. [2022-11-16 16:13:46,555 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 16:13:50,058 INFO L134 CoverageAnalysis]: Checked inductivity of 15079 backedges. 0 proven. 5501 refuted. 0 times theorem prover too weak. 9578 trivial. 0 not checked. [2022-11-16 16:13:50,059 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [873372147] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 16:13:50,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [798803006] [2022-11-16 16:13:50,060 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-11-16 16:13:50,061 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 16:13:50,061 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 16:13:50,061 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 16:13:50,061 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 16:13:50,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:13:50,097 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-16 16:13:50,097 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-11-16 16:13:50,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:13:50,106 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-16 16:13:50,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:13:50,120 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-16 16:13:50,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:13:50,152 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:13:50,181 INFO L321 Elim1Store]: treesize reduction 54, result has 28.0 percent of original size [2022-11-16 16:13:50,182 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 186 treesize of output 185 [2022-11-16 16:13:50,240 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-16 16:13:50,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:13:50,287 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2022-11-16 16:13:50,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:13:50,400 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 20 [2022-11-16 16:13:50,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:13:50,461 INFO L321 Elim1Store]: treesize reduction 45, result has 34.8 percent of original size [2022-11-16 16:13:50,462 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 80 [2022-11-16 16:13:50,515 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2022-11-16 16:13:50,524 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 16:13:50,619 INFO L197 IcfgInterpreter]: Interpreting procedure mapavg with input of size 12 for LOIs [2022-11-16 16:13:50,641 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 16:14:09,553 WARN L233 SmtUtils]: Spent 10.11s on a formula simplification. DAG size of input: 59 DAG size of output: 38 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 16:14:42,832 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '14846#(and (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~#x~0#1.offset|) (or (not (= |ULTIMATE.start_main_~ret2~0#1| |ULTIMATE.start_main_~ret~1#1|)) (not (= |ULTIMATE.start_main_~ret5~0#1| |ULTIMATE.start_main_~ret~1#1|))) (<= 0 (+ |ULTIMATE.start_main_~ret~1#1| 2147483648)) (<= |#NULL.offset| 0) (= |ULTIMATE.start_main_~temp~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 396 |ULTIMATE.start_main_~#x~0#1.offset|))) (<= |ULTIMATE.start_main_~ret~1#1| 2147483647) (exists ((v_mapavg_~ret~0_BEFORE_RETURN_77 Int)) (= |ULTIMATE.start_main_~ret5~0#1| (ite (<= (mod (ite (and (< v_mapavg_~ret~0_BEFORE_RETURN_77 0) (not (= (mod v_mapavg_~ret~0_BEFORE_RETURN_77 100) 0))) (+ (div v_mapavg_~ret~0_BEFORE_RETURN_77 100) 1) (div v_mapavg_~ret~0_BEFORE_RETURN_77 100)) 4294967296) 2147483647) (mod (ite (and (< v_mapavg_~ret~0_BEFORE_RETURN_77 0) (not (= (mod v_mapavg_~ret~0_BEFORE_RETURN_77 100) 0))) (+ (div v_mapavg_~ret~0_BEFORE_RETURN_77 100) 1) (div v_mapavg_~ret~0_BEFORE_RETURN_77 100)) 4294967296) (+ (mod (ite (and (< v_mapavg_~ret~0_BEFORE_RETURN_77 0) (not (= (mod v_mapavg_~ret~0_BEFORE_RETURN_77 100) 0))) (+ (div v_mapavg_~ret~0_BEFORE_RETURN_77 100) 1) (div v_mapavg_~ret~0_BEFORE_RETURN_77 100)) 4294967296) (- 4294967296))))) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 99 |ULTIMATE.start_main_~i~2#1|) (<= 0 |#NULL.offset|) (<= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 |#StackHeapBarrier|) (<= 100 |ULTIMATE.start_main_~i~1#1|) (= |#NULL.base| 0))' at error location [2022-11-16 16:14:42,833 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 16:14:42,833 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 16:14:42,833 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 49, 49] total 114 [2022-11-16 16:14:42,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487443906] [2022-11-16 16:14:42,833 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 16:14:42,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 114 states [2022-11-16 16:14:42,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:14:42,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2022-11-16 16:14:42,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4809, Invalid=11181, Unknown=12, NotChecked=0, Total=16002 [2022-11-16 16:14:42,837 INFO L87 Difference]: Start difference. First operand 178 states and 182 transitions. Second operand has 114 states, 114 states have (on average 1.1578947368421053) internal successors, (132), 114 states have internal predecessors, (132), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-16 16:14:43,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:14:43,126 INFO L93 Difference]: Finished difference Result 302 states and 360 transitions. [2022-11-16 16:14:43,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2022-11-16 16:14:43,127 INFO L78 Accepts]: Start accepts. Automaton has has 114 states, 114 states have (on average 1.1578947368421053) internal successors, (132), 114 states have internal predecessors, (132), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 275 [2022-11-16 16:14:43,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:14:43,129 INFO L225 Difference]: With dead ends: 302 [2022-11-16 16:14:43,129 INFO L226 Difference]: Without dead ends: 227 [2022-11-16 16:14:43,131 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 843 GetRequests, 718 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3655 ImplicationChecksByTransitivity, 57.2s TimeCoverageRelationStatistics Valid=4809, Invalid=11181, Unknown=12, NotChecked=0, Total=16002 [2022-11-16 16:14:43,131 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 16:14:43,132 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 133 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 16:14:43,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2022-11-16 16:14:43,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2022-11-16 16:14:43,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 222 states have (on average 1.0135135135135136) internal successors, (225), 222 states have internal predecessors, (225), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 16:14:43,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 231 transitions. [2022-11-16 16:14:43,144 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 231 transitions. Word has length 275 [2022-11-16 16:14:43,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:14:43,144 INFO L495 AbstractCegarLoop]: Abstraction has 227 states and 231 transitions. [2022-11-16 16:14:43,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 114 states, 114 states have (on average 1.1578947368421053) internal successors, (132), 114 states have internal predecessors, (132), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-16 16:14:43,145 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 231 transitions. [2022-11-16 16:14:43,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 421 [2022-11-16 16:14:43,148 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:14:43,148 INFO L195 NwaCegarLoop]: trace histogram [282, 100, 18, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:14:43,157 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05297890-0f03-4ede-b80d-a3fa81978565/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-16 16:14:43,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05297890-0f03-4ede-b80d-a3fa81978565/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-16 16:14:43,357 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 16:14:43,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:14:43,358 INFO L85 PathProgramCache]: Analyzing trace with hash -447602245, now seen corresponding path program 14 times [2022-11-16 16:14:43,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:14:43,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181688759] [2022-11-16 16:14:43,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:14:43,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:14:43,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:14:45,009 INFO L134 CoverageAnalysis]: Checked inductivity of 45697 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 45526 trivial. 0 not checked. [2022-11-16 16:14:45,009 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:14:45,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181688759] [2022-11-16 16:14:45,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181688759] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 16:14:45,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1368802805] [2022-11-16 16:14:45,010 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 16:14:45,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:14:45,010 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05297890-0f03-4ede-b80d-a3fa81978565/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:14:45,011 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05297890-0f03-4ede-b80d-a3fa81978565/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 16:14:45,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05297890-0f03-4ede-b80d-a3fa81978565/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-16 16:14:50,652 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2022-11-16 16:14:50,652 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 16:14:50,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 589 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-16 16:14:50,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:14:50,725 INFO L134 CoverageAnalysis]: Checked inductivity of 45697 backedges. 18054 proven. 171 refuted. 0 times theorem prover too weak. 27472 trivial. 0 not checked. [2022-11-16 16:14:50,726 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 16:14:51,429 INFO L134 CoverageAnalysis]: Checked inductivity of 45697 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 45526 trivial. 0 not checked. [2022-11-16 16:14:51,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1368802805] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 16:14:51,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1956168172] [2022-11-16 16:14:51,431 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-11-16 16:14:51,431 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 16:14:51,432 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 16:14:51,432 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 16:14:51,432 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 16:14:51,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:14:51,459 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 16:14:51,459 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 26 [2022-11-16 16:14:51,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:14:51,484 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-16 16:14:51,484 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-11-16 16:14:51,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:14:51,501 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-16 16:14:51,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:14:51,533 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:14:51,557 INFO L321 Elim1Store]: treesize reduction 54, result has 28.0 percent of original size [2022-11-16 16:14:51,558 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 186 treesize of output 185 [2022-11-16 16:14:51,613 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-16 16:14:51,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:14:51,665 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2022-11-16 16:14:51,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:14:51,741 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:14:51,742 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2022-11-16 16:14:51,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:14:51,778 INFO L321 Elim1Store]: treesize reduction 45, result has 6.3 percent of original size [2022-11-16 16:14:51,778 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 80 treesize of output 72 [2022-11-16 16:14:51,803 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2022-11-16 16:14:51,818 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 16:14:51,933 INFO L197 IcfgInterpreter]: Interpreting procedure mapavg with input of size 12 for LOIs [2022-11-16 16:14:51,959 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 16:15:37,384 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '18449#(and (exists ((v_mapavg_~ret~0_BEFORE_RETURN_84 Int)) (= |ULTIMATE.start_main_~ret5~0#1| (ite (<= (mod (ite (and (not (= (mod v_mapavg_~ret~0_BEFORE_RETURN_84 100) 0)) (< v_mapavg_~ret~0_BEFORE_RETURN_84 0)) (+ (div v_mapavg_~ret~0_BEFORE_RETURN_84 100) 1) (div v_mapavg_~ret~0_BEFORE_RETURN_84 100)) 4294967296) 2147483647) (mod (ite (and (not (= (mod v_mapavg_~ret~0_BEFORE_RETURN_84 100) 0)) (< v_mapavg_~ret~0_BEFORE_RETURN_84 0)) (+ (div v_mapavg_~ret~0_BEFORE_RETURN_84 100) 1) (div v_mapavg_~ret~0_BEFORE_RETURN_84 100)) 4294967296) (+ (mod (ite (and (not (= (mod v_mapavg_~ret~0_BEFORE_RETURN_84 100) 0)) (< v_mapavg_~ret~0_BEFORE_RETURN_84 0)) (+ (div v_mapavg_~ret~0_BEFORE_RETURN_84 100) 1) (div v_mapavg_~ret~0_BEFORE_RETURN_84 100)) 4294967296) (- 4294967296))))) (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (or (not (= |ULTIMATE.start_main_~ret2~0#1| |ULTIMATE.start_main_~ret~1#1|)) (not (= |ULTIMATE.start_main_~ret5~0#1| |ULTIMATE.start_main_~ret~1#1|))) (<= 0 (+ |ULTIMATE.start_main_~ret~1#1| 2147483648)) (= |ULTIMATE.start_main_~temp~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 396 |ULTIMATE.start_main_~#x~0#1.offset|))) (<= |ULTIMATE.start_main_~ret~1#1| 2147483647) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 99 |ULTIMATE.start_main_~i~2#1|) (<= 0 |#StackHeapBarrier|) (<= 100 |ULTIMATE.start_main_~i~1#1|) (= |#NULL.base| 0))' at error location [2022-11-16 16:15:37,385 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 16:15:37,385 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 16:15:37,385 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 41 [2022-11-16 16:15:37,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774090784] [2022-11-16 16:15:37,386 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 16:15:37,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-11-16 16:15:37,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:15:37,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-11-16 16:15:37,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=880, Invalid=1970, Unknown=12, NotChecked=0, Total=2862 [2022-11-16 16:15:37,388 INFO L87 Difference]: Start difference. First operand 227 states and 231 transitions. Second operand has 41 states, 41 states have (on average 1.3414634146341464) internal successors, (55), 41 states have internal predecessors, (55), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-16 16:15:37,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:15:37,498 INFO L93 Difference]: Finished difference Result 349 states and 373 transitions. [2022-11-16 16:15:37,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-11-16 16:15:37,499 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 1.3414634146341464) internal successors, (55), 41 states have internal predecessors, (55), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 420 [2022-11-16 16:15:37,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:15:37,501 INFO L225 Difference]: With dead ends: 349 [2022-11-16 16:15:37,501 INFO L226 Difference]: Without dead ends: 247 [2022-11-16 16:15:37,502 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1279 GetRequests, 1227 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 842 ImplicationChecksByTransitivity, 46.2s TimeCoverageRelationStatistics Valid=880, Invalid=1970, Unknown=12, NotChecked=0, Total=2862 [2022-11-16 16:15:37,502 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 16:15:37,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 16:15:37,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2022-11-16 16:15:37,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 247. [2022-11-16 16:15:37,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 242 states have (on average 1.012396694214876) internal successors, (245), 242 states have internal predecessors, (245), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 16:15:37,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 251 transitions. [2022-11-16 16:15:37,520 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 251 transitions. Word has length 420 [2022-11-16 16:15:37,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:15:37,521 INFO L495 AbstractCegarLoop]: Abstraction has 247 states and 251 transitions. [2022-11-16 16:15:37,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 1.3414634146341464) internal successors, (55), 41 states have internal predecessors, (55), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-16 16:15:37,522 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 251 transitions. [2022-11-16 16:15:37,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 441 [2022-11-16 16:15:37,529 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:15:37,530 INFO L195 NwaCegarLoop]: trace histogram [282, 100, 38, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:15:37,546 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05297890-0f03-4ede-b80d-a3fa81978565/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-16 16:15:37,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05297890-0f03-4ede-b80d-a3fa81978565/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-16 16:15:37,738 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 16:15:37,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:15:37,739 INFO L85 PathProgramCache]: Analyzing trace with hash -797945157, now seen corresponding path program 15 times [2022-11-16 16:15:37,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:15:37,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217125768] [2022-11-16 16:15:37,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:15:37,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:15:38,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:15:41,059 INFO L134 CoverageAnalysis]: Checked inductivity of 46267 backedges. 0 proven. 741 refuted. 0 times theorem prover too weak. 45526 trivial. 0 not checked. [2022-11-16 16:15:41,060 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:15:41,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217125768] [2022-11-16 16:15:41,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217125768] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 16:15:41,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1754040770] [2022-11-16 16:15:41,060 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 16:15:41,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:15:41,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05297890-0f03-4ede-b80d-a3fa81978565/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:15:41,062 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05297890-0f03-4ede-b80d-a3fa81978565/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 16:15:41,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05297890-0f03-4ede-b80d-a3fa81978565/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-16 16:15:41,874 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-16 16:15:41,874 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 16:15:41,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 2700 conjuncts, 96 conjunts are in the unsatisfiable core [2022-11-16 16:15:41,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:15:47,772 INFO L134 CoverageAnalysis]: Checked inductivity of 46267 backedges. 18052 proven. 4465 refuted. 0 times theorem prover too weak. 23750 trivial. 0 not checked. [2022-11-16 16:15:47,772 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 16:15:54,032 INFO L134 CoverageAnalysis]: Checked inductivity of 46267 backedges. 0 proven. 22517 refuted. 0 times theorem prover too weak. 23750 trivial. 0 not checked. [2022-11-16 16:15:54,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1754040770] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 16:15:54,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1483066693] [2022-11-16 16:15:54,033 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-11-16 16:15:54,034 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 16:15:54,034 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 16:15:54,034 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 16:15:54,034 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 16:15:54,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:15:54,063 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 16:15:54,064 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 26 [2022-11-16 16:15:54,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:15:54,086 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-16 16:15:54,086 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-11-16 16:15:54,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:15:54,104 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-16 16:15:54,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:15:54,139 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:15:54,164 INFO L321 Elim1Store]: treesize reduction 54, result has 28.0 percent of original size [2022-11-16 16:15:54,164 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 186 treesize of output 185 [2022-11-16 16:15:54,222 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-16 16:15:54,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:15:54,264 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2022-11-16 16:15:54,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:15:54,348 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:15:54,348 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2022-11-16 16:15:54,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:15:54,383 INFO L321 Elim1Store]: treesize reduction 45, result has 6.3 percent of original size [2022-11-16 16:15:54,383 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 80 treesize of output 72 [2022-11-16 16:15:54,429 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2022-11-16 16:15:54,442 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 16:15:54,535 INFO L197 IcfgInterpreter]: Interpreting procedure mapavg with input of size 12 for LOIs [2022-11-16 16:15:54,557 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 16:16:41,949 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '22408#(and (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (or (not (= |ULTIMATE.start_main_~ret2~0#1| |ULTIMATE.start_main_~ret~1#1|)) (not (= |ULTIMATE.start_main_~ret5~0#1| |ULTIMATE.start_main_~ret~1#1|))) (<= 0 (+ |ULTIMATE.start_main_~ret~1#1| 2147483648)) (= |ULTIMATE.start_main_~temp~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 396 |ULTIMATE.start_main_~#x~0#1.offset|))) (<= |ULTIMATE.start_main_~ret~1#1| 2147483647) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 99 |ULTIMATE.start_main_~i~2#1|) (exists ((v_mapavg_~ret~0_BEFORE_RETURN_89 Int)) (= |ULTIMATE.start_main_~ret5~0#1| (ite (<= (mod (ite (and (< v_mapavg_~ret~0_BEFORE_RETURN_89 0) (not (= (mod v_mapavg_~ret~0_BEFORE_RETURN_89 100) 0))) (+ (div v_mapavg_~ret~0_BEFORE_RETURN_89 100) 1) (div v_mapavg_~ret~0_BEFORE_RETURN_89 100)) 4294967296) 2147483647) (mod (ite (and (< v_mapavg_~ret~0_BEFORE_RETURN_89 0) (not (= (mod v_mapavg_~ret~0_BEFORE_RETURN_89 100) 0))) (+ (div v_mapavg_~ret~0_BEFORE_RETURN_89 100) 1) (div v_mapavg_~ret~0_BEFORE_RETURN_89 100)) 4294967296) (+ (mod (ite (and (< v_mapavg_~ret~0_BEFORE_RETURN_89 0) (not (= (mod v_mapavg_~ret~0_BEFORE_RETURN_89 100) 0))) (+ (div v_mapavg_~ret~0_BEFORE_RETURN_89 100) 1) (div v_mapavg_~ret~0_BEFORE_RETURN_89 100)) 4294967296) (- 4294967296))))) (<= 0 |#StackHeapBarrier|) (<= 100 |ULTIMATE.start_main_~i~1#1|) (= |#NULL.base| 0))' at error location [2022-11-16 16:16:41,949 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 16:16:41,949 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 16:16:41,949 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 97, 97] total 141 [2022-11-16 16:16:41,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678100692] [2022-11-16 16:16:41,950 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 16:16:41,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 141 states [2022-11-16 16:16:41,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:16:41,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 141 interpolants. [2022-11-16 16:16:41,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6030, Invalid=17520, Unknown=12, NotChecked=0, Total=23562 [2022-11-16 16:16:41,953 INFO L87 Difference]: Start difference. First operand 247 states and 251 transitions. Second operand has 141 states, 141 states have (on average 1.1347517730496455) internal successors, (160), 141 states have internal predecessors, (160), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-16 16:16:42,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:16:42,242 INFO L93 Difference]: Finished difference Result 398 states and 414 transitions. [2022-11-16 16:16:42,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2022-11-16 16:16:42,243 INFO L78 Accepts]: Start accepts. Automaton has has 141 states, 141 states have (on average 1.1347517730496455) internal successors, (160), 141 states have internal predecessors, (160), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 440 [2022-11-16 16:16:42,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:16:42,244 INFO L225 Difference]: With dead ends: 398 [2022-11-16 16:16:42,244 INFO L226 Difference]: Without dead ends: 254 [2022-11-16 16:16:42,246 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1359 GetRequests, 1117 SyntacticMatches, 90 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13537 ImplicationChecksByTransitivity, 59.8s TimeCoverageRelationStatistics Valid=6030, Invalid=17520, Unknown=12, NotChecked=0, Total=23562 [2022-11-16 16:16:42,247 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 16:16:42,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 122 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 16:16:42,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2022-11-16 16:16:42,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 254. [2022-11-16 16:16:42,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 249 states have (on average 1.0120481927710843) internal successors, (252), 249 states have internal predecessors, (252), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 16:16:42,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 258 transitions. [2022-11-16 16:16:42,269 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 258 transitions. Word has length 440 [2022-11-16 16:16:42,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:16:42,270 INFO L495 AbstractCegarLoop]: Abstraction has 254 states and 258 transitions. [2022-11-16 16:16:42,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 141 states, 141 states have (on average 1.1347517730496455) internal successors, (160), 141 states have internal predecessors, (160), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-16 16:16:42,270 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 258 transitions. [2022-11-16 16:16:42,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 460 [2022-11-16 16:16:42,273 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:16:42,273 INFO L195 NwaCegarLoop]: trace histogram [300, 100, 39, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:16:42,283 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05297890-0f03-4ede-b80d-a3fa81978565/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2022-11-16 16:16:42,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05297890-0f03-4ede-b80d-a3fa81978565/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-16 16:16:42,484 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 16:16:42,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:16:42,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1789607695, now seen corresponding path program 16 times [2022-11-16 16:16:42,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:16:42,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250916060] [2022-11-16 16:16:42,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:16:42,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:16:42,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:16:45,535 INFO L134 CoverageAnalysis]: Checked inductivity of 51589 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 50809 trivial. 0 not checked. [2022-11-16 16:16:45,535 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:16:45,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250916060] [2022-11-16 16:16:45,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250916060] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 16:16:45,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [417823696] [2022-11-16 16:16:45,536 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-16 16:16:45,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:16:45,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05297890-0f03-4ede-b80d-a3fa81978565/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:16:45,539 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05297890-0f03-4ede-b80d-a3fa81978565/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 16:16:45,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05297890-0f03-4ede-b80d-a3fa81978565/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-16 16:16:46,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:16:46,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 2797 conjuncts, 41 conjunts are in the unsatisfiable core [2022-11-16 16:16:46,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:16:46,505 INFO L134 CoverageAnalysis]: Checked inductivity of 51589 backedges. 20406 proven. 780 refuted. 0 times theorem prover too weak. 30403 trivial. 0 not checked. [2022-11-16 16:16:46,505 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 16:16:48,767 INFO L134 CoverageAnalysis]: Checked inductivity of 51589 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 50809 trivial. 0 not checked. [2022-11-16 16:16:48,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [417823696] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 16:16:48,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [697679410] [2022-11-16 16:16:48,769 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-11-16 16:16:48,770 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 16:16:48,770 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 16:16:48,770 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 16:16:48,770 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 16:16:48,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:16:48,799 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-16 16:16:48,800 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-11-16 16:16:48,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:16:48,808 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-16 16:16:48,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:16:48,824 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 33 [2022-11-16 16:16:48,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:16:48,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:16:48,875 INFO L321 Elim1Store]: treesize reduction 49, result has 12.5 percent of original size [2022-11-16 16:16:48,875 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 196 treesize of output 184 [2022-11-16 16:16:48,906 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-16 16:16:48,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:16:48,952 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2022-11-16 16:16:49,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:16:49,028 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:16:49,029 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2022-11-16 16:16:49,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:16:49,069 INFO L321 Elim1Store]: treesize reduction 45, result has 6.3 percent of original size [2022-11-16 16:16:49,069 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 80 treesize of output 72 [2022-11-16 16:16:49,095 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2022-11-16 16:16:49,109 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 16:16:49,219 INFO L197 IcfgInterpreter]: Interpreting procedure mapavg with input of size 12 for LOIs [2022-11-16 16:16:49,245 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 16:17:34,959 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '26533#(and (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (or (not (= |ULTIMATE.start_main_~ret2~0#1| |ULTIMATE.start_main_~ret~1#1|)) (not (= |ULTIMATE.start_main_~ret5~0#1| |ULTIMATE.start_main_~ret~1#1|))) (<= 0 (+ |ULTIMATE.start_main_~ret~1#1| 2147483648)) (= |ULTIMATE.start_main_~temp~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 396 |ULTIMATE.start_main_~#x~0#1.offset|))) (<= |ULTIMATE.start_main_~ret~1#1| 2147483647) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (exists ((v_mapavg_~ret~0_BEFORE_RETURN_96 Int)) (= |ULTIMATE.start_main_~ret5~0#1| (ite (<= (mod (ite (and (< v_mapavg_~ret~0_BEFORE_RETURN_96 0) (not (= (mod v_mapavg_~ret~0_BEFORE_RETURN_96 100) 0))) (+ (div v_mapavg_~ret~0_BEFORE_RETURN_96 100) 1) (div v_mapavg_~ret~0_BEFORE_RETURN_96 100)) 4294967296) 2147483647) (mod (ite (and (< v_mapavg_~ret~0_BEFORE_RETURN_96 0) (not (= (mod v_mapavg_~ret~0_BEFORE_RETURN_96 100) 0))) (+ (div v_mapavg_~ret~0_BEFORE_RETURN_96 100) 1) (div v_mapavg_~ret~0_BEFORE_RETURN_96 100)) 4294967296) (+ (mod (ite (and (< v_mapavg_~ret~0_BEFORE_RETURN_96 0) (not (= (mod v_mapavg_~ret~0_BEFORE_RETURN_96 100) 0))) (+ (div v_mapavg_~ret~0_BEFORE_RETURN_96 100) 1) (div v_mapavg_~ret~0_BEFORE_RETURN_96 100)) 4294967296) (- 4294967296))))) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 99 |ULTIMATE.start_main_~i~2#1|) (<= 0 |#StackHeapBarrier|) (<= 100 |ULTIMATE.start_main_~i~1#1|) (= |#NULL.base| 0))' at error location [2022-11-16 16:17:34,959 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 16:17:34,959 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 16:17:34,960 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42, 42] total 83 [2022-11-16 16:17:34,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911458170] [2022-11-16 16:17:34,960 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 16:17:34,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2022-11-16 16:17:34,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:17:34,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2022-11-16 16:17:34,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3463, Invalid=5645, Unknown=12, NotChecked=0, Total=9120 [2022-11-16 16:17:34,963 INFO L87 Difference]: Start difference. First operand 254 states and 258 transitions. Second operand has 83 states, 83 states have (on average 1.1686746987951808) internal successors, (97), 83 states have internal predecessors, (97), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-16 16:17:35,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:17:35,169 INFO L93 Difference]: Finished difference Result 403 states and 448 transitions. [2022-11-16 16:17:35,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2022-11-16 16:17:35,170 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 83 states have (on average 1.1686746987951808) internal successors, (97), 83 states have internal predecessors, (97), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 459 [2022-11-16 16:17:35,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:17:35,171 INFO L225 Difference]: With dead ends: 403 [2022-11-16 16:17:35,171 INFO L226 Difference]: Without dead ends: 295 [2022-11-16 16:17:35,173 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1417 GetRequests, 1323 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1745 ImplicationChecksByTransitivity, 48.6s TimeCoverageRelationStatistics Valid=3463, Invalid=5645, Unknown=12, NotChecked=0, Total=9120 [2022-11-16 16:17:35,173 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 16:17:35,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 100 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 16:17:35,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2022-11-16 16:17:35,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 295. [2022-11-16 16:17:35,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 290 states have (on average 1.0103448275862068) internal successors, (293), 290 states have internal predecessors, (293), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 16:17:35,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 299 transitions. [2022-11-16 16:17:35,193 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 299 transitions. Word has length 459 [2022-11-16 16:17:35,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:17:35,194 INFO L495 AbstractCegarLoop]: Abstraction has 295 states and 299 transitions. [2022-11-16 16:17:35,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 83 states have (on average 1.1686746987951808) internal successors, (97), 83 states have internal predecessors, (97), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-16 16:17:35,194 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 299 transitions. [2022-11-16 16:17:35,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 501 [2022-11-16 16:17:35,214 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:17:35,214 INFO L195 NwaCegarLoop]: trace histogram [300, 100, 80, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:17:35,228 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05297890-0f03-4ede-b80d-a3fa81978565/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-16 16:17:35,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05297890-0f03-4ede-b80d-a3fa81978565/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:17:35,428 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 16:17:35,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:17:35,429 INFO L85 PathProgramCache]: Analyzing trace with hash -597599461, now seen corresponding path program 17 times [2022-11-16 16:17:35,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:17:35,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177956407] [2022-11-16 16:17:35,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:17:35,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:17:35,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:17:42,856 INFO L134 CoverageAnalysis]: Checked inductivity of 54049 backedges. 0 proven. 3240 refuted. 0 times theorem prover too weak. 50809 trivial. 0 not checked. [2022-11-16 16:17:42,856 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:17:42,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177956407] [2022-11-16 16:17:42,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177956407] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 16:17:42,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1528026225] [2022-11-16 16:17:42,857 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 16:17:42,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:17:42,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05297890-0f03-4ede-b80d-a3fa81978565/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:17:42,858 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05297890-0f03-4ede-b80d-a3fa81978565/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 16:17:42,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05297890-0f03-4ede-b80d-a3fa81978565/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process