./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/heap-data/packet_filter.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4aa5d93-473d-42e8-ba70-1c36195b8543/bin/utaipan-Xvt2sAort0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4aa5d93-473d-42e8-ba70-1c36195b8543/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_b4aa5d93-473d-42e8-ba70-1c36195b8543/bin/utaipan-Xvt2sAort0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4aa5d93-473d-42e8-ba70-1c36195b8543/bin/utaipan-Xvt2sAort0/config/TaipanReach.xml -i ../../sv-benchmarks/c/heap-data/packet_filter.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4aa5d93-473d-42e8-ba70-1c36195b8543/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_b4aa5d93-473d-42e8-ba70-1c36195b8543/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 d604fdd8f7c4d34db0106d8a0ff422218ae80e9ee6eb03f691b84d2fcc8ad49f --- 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 20:19:35,190 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 20:19:35,192 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 20:19:35,211 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 20:19:35,211 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 20:19:35,212 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 20:19:35,213 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 20:19:35,215 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 20:19:35,217 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 20:19:35,218 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 20:19:35,219 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 20:19:35,220 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 20:19:35,220 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 20:19:35,221 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 20:19:35,222 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 20:19:35,223 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 20:19:35,224 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 20:19:35,225 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 20:19:35,227 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 20:19:35,229 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 20:19:35,230 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 20:19:35,232 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 20:19:35,233 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 20:19:35,234 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 20:19:35,237 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 20:19:35,238 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 20:19:35,238 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 20:19:35,239 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 20:19:35,240 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 20:19:35,241 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 20:19:35,241 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 20:19:35,242 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 20:19:35,243 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 20:19:35,244 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 20:19:35,245 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 20:19:35,245 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 20:19:35,246 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 20:19:35,246 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 20:19:35,246 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 20:19:35,247 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 20:19:35,248 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 20:19:35,249 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4aa5d93-473d-42e8-ba70-1c36195b8543/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-16 20:19:35,272 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 20:19:35,273 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 20:19:35,273 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 20:19:35,273 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 20:19:35,274 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 20:19:35,274 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 20:19:35,274 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-16 20:19:35,275 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-16 20:19:35,275 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-16 20:19:35,275 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-16 20:19:35,275 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-16 20:19:35,275 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-16 20:19:35,275 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-16 20:19:35,276 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-16 20:19:35,276 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-16 20:19:35,276 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-16 20:19:35,276 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-16 20:19:35,276 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-16 20:19:35,277 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 20:19:35,277 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 20:19:35,277 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 20:19:35,278 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 20:19:35,278 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 20:19:35,278 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 20:19:35,278 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 20:19:35,278 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 20:19:35,278 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 20:19:35,278 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 20:19:35,279 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 20:19:35,279 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 20:19:35,279 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 20:19:35,279 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 20:19:35,279 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 20:19:35,280 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 20:19:35,280 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-16 20:19:35,280 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 20:19:35,280 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 20:19:35,280 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-16 20:19:35,280 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 20:19:35,281 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 20:19:35,281 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-16 20:19:35,281 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_b4aa5d93-473d-42e8-ba70-1c36195b8543/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4aa5d93-473d-42e8-ba70-1c36195b8543/bin/utaipan-Xvt2sAort0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d604fdd8f7c4d34db0106d8a0ff422218ae80e9ee6eb03f691b84d2fcc8ad49f [2022-11-16 20:19:35,520 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 20:19:35,544 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 20:19:35,549 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 20:19:35,550 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 20:19:35,551 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 20:19:35,552 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4aa5d93-473d-42e8-ba70-1c36195b8543/bin/utaipan-Xvt2sAort0/../../sv-benchmarks/c/heap-data/packet_filter.i [2022-11-16 20:19:35,617 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4aa5d93-473d-42e8-ba70-1c36195b8543/bin/utaipan-Xvt2sAort0/data/b5ec2590d/5970f0ed4c1b462a88ef90b3bcb880cd/FLAGc4956eb62 [2022-11-16 20:19:36,213 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 20:19:36,214 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4aa5d93-473d-42e8-ba70-1c36195b8543/sv-benchmarks/c/heap-data/packet_filter.i [2022-11-16 20:19:36,225 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4aa5d93-473d-42e8-ba70-1c36195b8543/bin/utaipan-Xvt2sAort0/data/b5ec2590d/5970f0ed4c1b462a88ef90b3bcb880cd/FLAGc4956eb62 [2022-11-16 20:19:36,638 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4aa5d93-473d-42e8-ba70-1c36195b8543/bin/utaipan-Xvt2sAort0/data/b5ec2590d/5970f0ed4c1b462a88ef90b3bcb880cd [2022-11-16 20:19:36,642 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 20:19:36,643 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 20:19:36,649 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 20:19:36,649 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 20:19:36,652 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 20:19:36,653 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 08:19:36" (1/1) ... [2022-11-16 20:19:36,654 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71b21b8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:19:36, skipping insertion in model container [2022-11-16 20:19:36,655 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 08:19:36" (1/1) ... [2022-11-16 20:19:36,662 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 20:19:36,708 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 20:19:37,080 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_b4aa5d93-473d-42e8-ba70-1c36195b8543/sv-benchmarks/c/heap-data/packet_filter.i[23925,23938] [2022-11-16 20:19:37,091 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_b4aa5d93-473d-42e8-ba70-1c36195b8543/sv-benchmarks/c/heap-data/packet_filter.i[24159,24172] [2022-11-16 20:19:37,106 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 20:19:37,117 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 20:19:37,178 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_b4aa5d93-473d-42e8-ba70-1c36195b8543/sv-benchmarks/c/heap-data/packet_filter.i[23925,23938] [2022-11-16 20:19:37,184 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_b4aa5d93-473d-42e8-ba70-1c36195b8543/sv-benchmarks/c/heap-data/packet_filter.i[24159,24172] [2022-11-16 20:19:37,191 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 20:19:37,224 INFO L208 MainTranslator]: Completed translation [2022-11-16 20:19:37,224 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:19:37 WrapperNode [2022-11-16 20:19:37,224 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 20:19:37,225 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 20:19:37,225 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 20:19:37,225 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 20:19:37,233 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:19:37" (1/1) ... [2022-11-16 20:19:37,263 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:19:37" (1/1) ... [2022-11-16 20:19:37,293 INFO L138 Inliner]: procedures = 130, calls = 86, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 156 [2022-11-16 20:19:37,293 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 20:19:37,294 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 20:19:37,294 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 20:19:37,294 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 20:19:37,303 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:19:37" (1/1) ... [2022-11-16 20:19:37,304 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:19:37" (1/1) ... [2022-11-16 20:19:37,309 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:19:37" (1/1) ... [2022-11-16 20:19:37,309 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:19:37" (1/1) ... [2022-11-16 20:19:37,318 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:19:37" (1/1) ... [2022-11-16 20:19:37,322 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:19:37" (1/1) ... [2022-11-16 20:19:37,324 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:19:37" (1/1) ... [2022-11-16 20:19:37,325 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:19:37" (1/1) ... [2022-11-16 20:19:37,329 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 20:19:37,329 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 20:19:37,330 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 20:19:37,330 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 20:19:37,331 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:19:37" (1/1) ... [2022-11-16 20:19:37,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 20:19:37,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4aa5d93-473d-42e8-ba70-1c36195b8543/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 20:19:37,362 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4aa5d93-473d-42e8-ba70-1c36195b8543/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 20:19:37,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4aa5d93-473d-42e8-ba70-1c36195b8543/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 20:19:37,430 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 20:19:37,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 20:19:37,430 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 20:19:37,431 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 20:19:37,431 INFO L130 BoogieDeclarations]: Found specification of procedure append_to_queue [2022-11-16 20:19:37,431 INFO L138 BoogieDeclarations]: Found implementation of procedure append_to_queue [2022-11-16 20:19:37,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-16 20:19:37,431 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 20:19:37,431 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-16 20:19:37,431 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_charp [2022-11-16 20:19:37,432 INFO L130 BoogieDeclarations]: Found specification of procedure send [2022-11-16 20:19:37,432 INFO L138 BoogieDeclarations]: Found implementation of procedure send [2022-11-16 20:19:37,432 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 20:19:37,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-16 20:19:37,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 20:19:37,432 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 20:19:37,432 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 20:19:37,562 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 20:19:37,565 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 20:19:38,065 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 20:19:38,171 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 20:19:38,180 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-16 20:19:38,183 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 08:19:38 BoogieIcfgContainer [2022-11-16 20:19:38,183 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 20:19:38,185 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 20:19:38,185 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 20:19:38,191 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 20:19:38,192 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 08:19:36" (1/3) ... [2022-11-16 20:19:38,192 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3982bc56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 08:19:38, skipping insertion in model container [2022-11-16 20:19:38,194 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:19:37" (2/3) ... [2022-11-16 20:19:38,195 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3982bc56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 08:19:38, skipping insertion in model container [2022-11-16 20:19:38,195 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 08:19:38" (3/3) ... [2022-11-16 20:19:38,197 INFO L112 eAbstractionObserver]: Analyzing ICFG packet_filter.i [2022-11-16 20:19:38,215 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 20:19:38,216 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-16 20:19:38,292 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 20:19:38,305 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;@603b1053, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 20:19:38,305 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-16 20:19:38,311 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 25 states have internal predecessors, (34), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-16 20:19:38,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-16 20:19:38,319 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:19:38,320 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-16 20:19:38,321 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:19:38,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:19:38,328 INFO L85 PathProgramCache]: Analyzing trace with hash 297298087, now seen corresponding path program 1 times [2022-11-16 20:19:38,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:19:38,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136544763] [2022-11-16 20:19:38,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:19:38,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:19:38,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:19:38,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:19:38,487 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:19:38,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136544763] [2022-11-16 20:19:38,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136544763] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:19:38,488 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:19:38,488 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 20:19:38,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989309454] [2022-11-16 20:19:38,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:19:38,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 20:19:38,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:19:38,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 20:19:38,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 20:19:38,526 INFO L87 Difference]: Start difference. First operand has 33 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 25 states have internal predecessors, (34), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:19:38,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:19:38,636 INFO L93 Difference]: Finished difference Result 51 states and 66 transitions. [2022-11-16 20:19:38,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 20:19:38,639 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-16 20:19:38,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:19:38,654 INFO L225 Difference]: With dead ends: 51 [2022-11-16 20:19:38,654 INFO L226 Difference]: Without dead ends: 32 [2022-11-16 20:19:38,657 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 20:19:38,666 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 20:19:38,667 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 20:19:38,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-11-16 20:19:38,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2022-11-16 20:19:38,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 24 states have internal predecessors, (30), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-16 20:19:38,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 40 transitions. [2022-11-16 20:19:38,703 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 40 transitions. Word has length 6 [2022-11-16 20:19:38,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:19:38,703 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 40 transitions. [2022-11-16 20:19:38,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:19:38,704 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 40 transitions. [2022-11-16 20:19:38,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-16 20:19:38,705 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:19:38,706 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:19:38,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 20:19:38,706 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:19:38,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:19:38,707 INFO L85 PathProgramCache]: Analyzing trace with hash -350648386, now seen corresponding path program 1 times [2022-11-16 20:19:38,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:19:38,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991345671] [2022-11-16 20:19:38,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:19:38,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:19:38,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:19:39,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:19:39,077 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:19:39,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991345671] [2022-11-16 20:19:39,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991345671] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:19:39,078 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:19:39,078 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 20:19:39,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953818989] [2022-11-16 20:19:39,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:19:39,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 20:19:39,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:19:39,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 20:19:39,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 20:19:39,081 INFO L87 Difference]: Start difference. First operand 32 states and 40 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:19:39,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:19:39,267 INFO L93 Difference]: Finished difference Result 58 states and 71 transitions. [2022-11-16 20:19:39,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 20:19:39,269 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-16 20:19:39,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:19:39,273 INFO L225 Difference]: With dead ends: 58 [2022-11-16 20:19:39,273 INFO L226 Difference]: Without dead ends: 42 [2022-11-16 20:19:39,274 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 20:19:39,276 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 19 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 20:19:39,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 76 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 20:19:39,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-11-16 20:19:39,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 36. [2022-11-16 20:19:39,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 28 states have internal predecessors, (35), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-16 20:19:39,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 45 transitions. [2022-11-16 20:19:39,290 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 45 transitions. Word has length 7 [2022-11-16 20:19:39,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:19:39,294 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 45 transitions. [2022-11-16 20:19:39,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:19:39,294 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 45 transitions. [2022-11-16 20:19:39,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-16 20:19:39,297 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:19:39,298 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:19:39,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 20:19:39,298 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:19:39,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:19:39,309 INFO L85 PathProgramCache]: Analyzing trace with hash 2014810633, now seen corresponding path program 1 times [2022-11-16 20:19:39,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:19:39,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156735422] [2022-11-16 20:19:39,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:19:39,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:19:39,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:19:39,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:19:39,542 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:19:39,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156735422] [2022-11-16 20:19:39,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156735422] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:19:39,544 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:19:39,545 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 20:19:39,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743284335] [2022-11-16 20:19:39,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:19:39,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 20:19:39,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:19:39,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 20:19:39,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 20:19:39,547 INFO L87 Difference]: Start difference. First operand 36 states and 45 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:19:39,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:19:39,698 INFO L93 Difference]: Finished difference Result 46 states and 55 transitions. [2022-11-16 20:19:39,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 20:19:39,699 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-16 20:19:39,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:19:39,700 INFO L225 Difference]: With dead ends: 46 [2022-11-16 20:19:39,700 INFO L226 Difference]: Without dead ends: 34 [2022-11-16 20:19:39,701 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 20:19:39,702 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 1 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 20:19:39,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 83 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 20:19:39,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-11-16 20:19:39,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2022-11-16 20:19:39,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 25 states have (on average 1.28) internal successors, (32), 26 states have internal predecessors, (32), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-16 20:19:39,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 42 transitions. [2022-11-16 20:19:39,710 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 42 transitions. Word has length 8 [2022-11-16 20:19:39,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:19:39,710 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 42 transitions. [2022-11-16 20:19:39,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:19:39,711 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 42 transitions. [2022-11-16 20:19:39,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-16 20:19:39,711 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:19:39,712 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:19:39,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 20:19:39,712 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:19:39,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:19:39,713 INFO L85 PathProgramCache]: Analyzing trace with hash 898291988, now seen corresponding path program 1 times [2022-11-16 20:19:39,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:19:39,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305783186] [2022-11-16 20:19:39,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:19:39,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:19:39,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:19:40,330 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:19:40,330 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:19:40,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305783186] [2022-11-16 20:19:40,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305783186] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 20:19:40,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1169069028] [2022-11-16 20:19:40,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:19:40,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:19:40,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4aa5d93-473d-42e8-ba70-1c36195b8543/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 20:19:40,339 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4aa5d93-473d-42e8-ba70-1c36195b8543/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 20:19:40,368 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4aa5d93-473d-42e8-ba70-1c36195b8543/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 20:19:40,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:19:40,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 42 conjunts are in the unsatisfiable core [2022-11-16 20:19:40,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:19:40,598 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-16 20:19:40,599 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2022-11-16 20:19:40,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:40,675 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 14 treesize of output 16 [2022-11-16 20:19:40,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:40,688 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 14 treesize of output 16 [2022-11-16 20:19:40,706 INFO L321 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2022-11-16 20:19:40,709 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22 [2022-11-16 20:19:40,767 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-16 20:19:40,774 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-16 20:19:40,779 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:19:40,779 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:19:41,068 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:19:41,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1169069028] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 20:19:41,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [738962844] [2022-11-16 20:19:41,094 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-16 20:19:41,094 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 20:19:41,097 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 20:19:41,102 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 20:19:41,103 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 20:19:41,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:41,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:41,201 INFO L321 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-11-16 20:19:41,202 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 39 treesize of output 53 [2022-11-16 20:19:41,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:41,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:41,225 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 8 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 27 [2022-11-16 20:19:41,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:41,419 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 41 [2022-11-16 20:19:41,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:41,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:41,534 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 11 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 42 [2022-11-16 20:19:41,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:41,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:41,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:41,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:41,775 INFO L321 Elim1Store]: treesize reduction 148, result has 18.2 percent of original size [2022-11-16 20:19:41,776 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 14 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 12 case distinctions, treesize of input 49 treesize of output 73 [2022-11-16 20:19:41,906 INFO L321 Elim1Store]: treesize reduction 24, result has 48.9 percent of original size [2022-11-16 20:19:41,909 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 50 [2022-11-16 20:19:41,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:41,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:41,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:41,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:41,990 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-16 20:19:41,991 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 16 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 55 [2022-11-16 20:19:42,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:42,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:42,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:42,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:42,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:42,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:42,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:42,408 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 57 [2022-11-16 20:19:42,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:42,592 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 41 [2022-11-16 20:19:42,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:42,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:42,683 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 11 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 42 [2022-11-16 20:19:42,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:42,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:42,761 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 11 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 42 [2022-11-16 20:19:42,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:42,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:42,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:42,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:42,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:42,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:42,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:42,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:42,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:42,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:42,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:42,836 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 19 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 43 [2022-11-16 20:19:42,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:42,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:42,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:42,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:42,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:42,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:42,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:42,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:42,927 INFO L321 Elim1Store]: treesize reduction 64, result has 19.0 percent of original size [2022-11-16 20:19:42,927 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 18 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 6 case distinctions, treesize of input 49 treesize of output 65 [2022-11-16 20:19:43,091 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 20:19:44,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [738962844] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:19:44,325 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-16 20:19:44,325 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4, 4, 4] total 10 [2022-11-16 20:19:44,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683114778] [2022-11-16 20:19:44,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:19:44,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 20:19:44,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:19:44,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 20:19:44,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-11-16 20:19:44,327 INFO L87 Difference]: Start difference. First operand 34 states and 42 transitions. Second operand has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:19:44,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:19:44,570 INFO L93 Difference]: Finished difference Result 62 states and 76 transitions. [2022-11-16 20:19:44,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 20:19:44,570 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-16 20:19:44,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:19:44,571 INFO L225 Difference]: With dead ends: 62 [2022-11-16 20:19:44,571 INFO L226 Difference]: Without dead ends: 46 [2022-11-16 20:19:44,572 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-11-16 20:19:44,572 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 8 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 16 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 20:19:44,573 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 58 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 16 Unchecked, 0.2s Time] [2022-11-16 20:19:44,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-11-16 20:19:44,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 40. [2022-11-16 20:19:44,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 31 states have (on average 1.2903225806451613) internal successors, (40), 32 states have internal predecessors, (40), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-16 20:19:44,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 50 transitions. [2022-11-16 20:19:44,584 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 50 transitions. Word has length 11 [2022-11-16 20:19:44,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:19:44,585 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 50 transitions. [2022-11-16 20:19:44,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:19:44,585 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 50 transitions. [2022-11-16 20:19:44,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-16 20:19:44,586 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:19:44,586 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:19:44,601 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4aa5d93-473d-42e8-ba70-1c36195b8543/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 20:19:44,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4aa5d93-473d-42e8-ba70-1c36195b8543/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:19:44,802 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:19:44,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:19:44,803 INFO L85 PathProgramCache]: Analyzing trace with hash 2077256563, now seen corresponding path program 1 times [2022-11-16 20:19:44,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:19:44,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559224934] [2022-11-16 20:19:44,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:19:44,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:19:44,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:19:45,063 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:19:45,064 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:19:45,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559224934] [2022-11-16 20:19:45,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559224934] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 20:19:45,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [247623816] [2022-11-16 20:19:45,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:19:45,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:19:45,065 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4aa5d93-473d-42e8-ba70-1c36195b8543/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 20:19:45,066 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4aa5d93-473d-42e8-ba70-1c36195b8543/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 20:19:45,091 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4aa5d93-473d-42e8-ba70-1c36195b8543/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 20:19:45,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:19:45,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-16 20:19:45,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:19:45,216 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 20:19:45,216 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2022-11-16 20:19:45,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:45,267 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 14 treesize of output 16 [2022-11-16 20:19:45,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:45,275 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 14 treesize of output 16 [2022-11-16 20:19:45,293 INFO L321 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2022-11-16 20:19:45,294 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22 [2022-11-16 20:19:45,329 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-16 20:19:45,332 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-16 20:19:45,336 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:19:45,336 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:19:45,483 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:19:45,483 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [247623816] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 20:19:45,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [174152502] [2022-11-16 20:19:45,485 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2022-11-16 20:19:45,485 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 20:19:45,486 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 20:19:45,486 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 20:19:45,486 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 20:19:45,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:45,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:45,544 INFO L321 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-11-16 20:19:45,545 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 39 treesize of output 53 [2022-11-16 20:19:45,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:45,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:45,560 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 8 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 27 [2022-11-16 20:19:45,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:45,697 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 41 [2022-11-16 20:19:45,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:45,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:45,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:45,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:45,967 INFO L321 Elim1Store]: treesize reduction 148, result has 18.2 percent of original size [2022-11-16 20:19:45,967 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 14 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 12 case distinctions, treesize of input 49 treesize of output 73 [2022-11-16 20:19:46,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:46,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:46,041 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 14 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 42 [2022-11-16 20:19:46,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:46,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:46,091 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 14 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 42 [2022-11-16 20:19:46,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:46,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:46,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:46,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:46,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:46,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:46,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:46,147 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 19 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 43 [2022-11-16 20:19:46,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:46,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:46,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:46,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:46,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:46,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:46,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:46,254 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 57 [2022-11-16 20:19:46,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:46,445 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 41 [2022-11-16 20:19:46,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:46,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:46,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:46,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:46,747 INFO L321 Elim1Store]: treesize reduction 148, result has 18.2 percent of original size [2022-11-16 20:19:46,748 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 14 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 12 case distinctions, treesize of input 49 treesize of output 73 [2022-11-16 20:19:46,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:46,839 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-16 20:19:46,841 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 13 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 46 [2022-11-16 20:19:46,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:46,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:46,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:46,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:46,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:46,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:46,932 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 20:19:46,932 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 18 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 47 [2022-11-16 20:19:46,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:46,999 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-16 20:19:47,000 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 13 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 46 [2022-11-16 20:19:47,211 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 20:19:48,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [174152502] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:19:48,797 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-16 20:19:48,798 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4, 4, 4] total 11 [2022-11-16 20:19:48,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791882037] [2022-11-16 20:19:48,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:19:48,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 20:19:48,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:19:48,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 20:19:48,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-11-16 20:19:48,799 INFO L87 Difference]: Start difference. First operand 40 states and 50 transitions. Second operand has 8 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:19:49,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:19:49,012 INFO L93 Difference]: Finished difference Result 50 states and 60 transitions. [2022-11-16 20:19:49,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 20:19:49,013 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-16 20:19:49,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:19:49,013 INFO L225 Difference]: With dead ends: 50 [2022-11-16 20:19:49,014 INFO L226 Difference]: Without dead ends: 38 [2022-11-16 20:19:49,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-11-16 20:19:49,015 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 3 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 48 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 20:19:49,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 80 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 42 Invalid, 0 Unknown, 48 Unchecked, 0.2s Time] [2022-11-16 20:19:49,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-11-16 20:19:49,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2022-11-16 20:19:49,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 28 states have internal predecessors, (35), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-16 20:19:49,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 45 transitions. [2022-11-16 20:19:49,021 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 45 transitions. Word has length 12 [2022-11-16 20:19:49,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:19:49,021 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 45 transitions. [2022-11-16 20:19:49,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:19:49,022 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 45 transitions. [2022-11-16 20:19:49,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-16 20:19:49,022 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:19:49,024 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:19:49,034 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4aa5d93-473d-42e8-ba70-1c36195b8543/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-16 20:19:49,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4aa5d93-473d-42e8-ba70-1c36195b8543/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:19:49,229 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:19:49,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:19:49,230 INFO L85 PathProgramCache]: Analyzing trace with hash -279614113, now seen corresponding path program 1 times [2022-11-16 20:19:49,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:19:49,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134196027] [2022-11-16 20:19:49,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:19:49,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:19:49,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:19:50,511 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:19:50,511 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:19:50,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134196027] [2022-11-16 20:19:50,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134196027] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 20:19:50,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1956008769] [2022-11-16 20:19:50,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:19:50,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:19:50,512 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4aa5d93-473d-42e8-ba70-1c36195b8543/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 20:19:50,513 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4aa5d93-473d-42e8-ba70-1c36195b8543/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 20:19:50,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4aa5d93-473d-42e8-ba70-1c36195b8543/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 20:19:50,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:19:50,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 64 conjunts are in the unsatisfiable core [2022-11-16 20:19:50,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:19:50,745 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2022-11-16 20:19:50,835 INFO L321 Elim1Store]: treesize reduction 40, result has 42.9 percent of original size [2022-11-16 20:19:50,836 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 64 [2022-11-16 20:19:50,873 INFO L321 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2022-11-16 20:19:50,873 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 74 [2022-11-16 20:19:50,914 INFO L321 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2022-11-16 20:19:50,915 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 74 [2022-11-16 20:19:50,930 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 7 [2022-11-16 20:19:50,978 INFO L321 Elim1Store]: treesize reduction 20, result has 57.4 percent of original size [2022-11-16 20:19:50,979 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 60 [2022-11-16 20:19:50,995 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 7 [2022-11-16 20:19:51,014 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 11 [2022-11-16 20:19:51,029 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 7 [2022-11-16 20:19:51,112 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-16 20:19:51,165 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 20:19:51,166 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 5 [2022-11-16 20:19:51,170 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-16 20:19:51,235 INFO L321 Elim1Store]: treesize reduction 33, result has 2.9 percent of original size [2022-11-16 20:19:51,235 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 156 treesize of output 96 [2022-11-16 20:19:51,241 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 66 [2022-11-16 20:19:51,579 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 39 [2022-11-16 20:19:51,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:51,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:51,590 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 14 [2022-11-16 20:19:51,596 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 20:19:51,666 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 20:19:51,666 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 55 [2022-11-16 20:19:51,672 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:19:51,672 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:19:52,236 INFO L321 Elim1Store]: treesize reduction 41, result has 62.0 percent of original size [2022-11-16 20:19:52,236 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 7 case distinctions, treesize of input 115 treesize of output 91 [2022-11-16 20:19:52,259 INFO L321 Elim1Store]: treesize reduction 9, result has 47.1 percent of original size [2022-11-16 20:19:52,260 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 93 treesize of output 77 [2022-11-16 20:19:52,269 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2022-11-16 20:19:52,441 INFO L321 Elim1Store]: treesize reduction 107, result has 0.9 percent of original size [2022-11-16 20:19:52,441 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 7 case distinctions, treesize of input 115 treesize of output 1 [2022-11-16 20:19:52,556 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:19:52,557 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1956008769] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 20:19:52,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [757110403] [2022-11-16 20:19:52,559 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-11-16 20:19:52,559 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 20:19:52,560 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 20:19:52,560 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 20:19:52,560 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 20:19:52,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:52,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:52,624 INFO L321 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-11-16 20:19:52,624 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 39 treesize of output 53 [2022-11-16 20:19:52,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:52,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:52,638 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 8 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 27 [2022-11-16 20:19:52,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:52,760 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 41 [2022-11-16 20:19:52,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:52,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:52,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:52,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:52,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:52,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:52,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:52,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:52,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:52,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:52,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:52,827 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 19 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 43 [2022-11-16 20:19:52,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:52,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:52,909 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 11 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 42 [2022-11-16 20:19:52,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:52,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:52,959 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 11 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 42 [2022-11-16 20:19:52,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:52,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:52,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:52,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:53,067 INFO L321 Elim1Store]: treesize reduction 148, result has 18.2 percent of original size [2022-11-16 20:19:53,068 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 14 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 12 case distinctions, treesize of input 49 treesize of output 73 [2022-11-16 20:19:53,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:53,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:53,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:53,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:53,884 INFO L217 Elim1Store]: Index analysis took 138 ms [2022-11-16 20:20:21,453 WARN L233 SmtUtils]: Spent 27.31s on a formula simplification. DAG size of input: 272 DAG size of output: 179 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-16 20:20:21,455 INFO L321 Elim1Store]: treesize reduction 744, result has 48.6 percent of original size [2022-11-16 20:20:21,457 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 6 stores, 1 select indices, 1 select index equivalence classes, 12 disjoint index pairs (out of 0 index pairs), introduced 7 new quantified variables, introduced 42 case distinctions, treesize of input 17346246 treesize of output 2913182 [2022-11-16 20:20:32,541 WARN L233 SmtUtils]: Spent 11.08s on a formula simplification that was a NOOP. DAG size: 1409 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-16 20:20:43,141 WARN L233 SmtUtils]: Spent 10.01s on a formula simplification that was a NOOP. DAG size: 1404 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-16 20:20:43,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:20:43,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:20:43,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:20:43,920 INFO L217 Elim1Store]: Index analysis took 107 ms [2022-11-16 20:20:44,202 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 38 [2022-11-16 20:20:54,084 WARN L233 SmtUtils]: Spent 9.88s on a formula simplification that was a NOOP. DAG size: 1402 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-16 20:21:03,951 WARN L233 SmtUtils]: Spent 9.86s on a formula simplification that was a NOOP. DAG size: 1399 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-16 20:21:04,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:21:04,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:21:04,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:21:04,647 INFO L217 Elim1Store]: Index analysis took 126 ms [2022-11-16 20:21:04,979 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 43 [2022-11-16 20:21:15,254 WARN L233 SmtUtils]: Spent 10.27s on a formula simplification that was a NOOP. DAG size: 1401 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-16 20:21:26,318 WARN L233 SmtUtils]: Spent 11.03s on a formula simplification that was a NOOP. DAG size: 1393 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-16 20:21:26,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:21:26,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:21:26,934 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 23 treesize of output 17 [2022-11-16 20:21:37,869 WARN L233 SmtUtils]: Spent 10.93s on a formula simplification that was a NOOP. DAG size: 1392 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-16 20:22:00,181 WARN L233 SmtUtils]: Spent 10.14s on a formula simplification that was a NOOP. DAG size: 1381 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-16 20:22:00,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:22:00,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:22:00,812 INFO L217 Elim1Store]: Index analysis took 184 ms [2022-11-16 20:22:02,873 INFO L321 Elim1Store]: treesize reduction 84, result has 43.6 percent of original size [2022-11-16 20:22:02,873 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 4 case distinctions, treesize of input 46 treesize of output 77 [2022-11-16 20:22:13,318 WARN L233 SmtUtils]: Spent 10.44s on a formula simplification that was a NOOP. DAG size: 1386 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-16 20:22:33,764 WARN L233 SmtUtils]: Spent 10.40s on a formula simplification that was a NOOP. DAG size: 1371 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-16 20:22:34,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:22:34,318 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2022-11-16 20:22:45,096 WARN L233 SmtUtils]: Spent 10.78s on a formula simplification that was a NOOP. DAG size: 1371 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-16 20:23:05,984 WARN L233 SmtUtils]: Spent 10.24s on a formula simplification that was a NOOP. DAG size: 1364 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-16 20:23:17,144 WARN L233 SmtUtils]: Spent 10.84s on a formula simplification that was a NOOP. DAG size: 1360 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-16 20:23:17,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:23:17,912 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 22 [2022-11-16 20:23:28,991 WARN L233 SmtUtils]: Spent 11.08s on a formula simplification that was a NOOP. DAG size: 1356 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-16 20:23:40,127 WARN L233 SmtUtils]: Spent 11.13s on a formula simplification that was a NOOP. DAG size: 1350 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-16 20:23:40,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:23:41,685 INFO L321 Elim1Store]: treesize reduction 228, result has 50.1 percent of original size [2022-11-16 20:23:41,686 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 5 new quantified variables, introduced 13 case distinctions, treesize of input 286 treesize of output 400 [2022-11-16 20:23:51,979 WARN L233 SmtUtils]: Spent 10.29s on a formula simplification that was a NOOP. DAG size: 1419 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-16 20:24:02,967 WARN L233 SmtUtils]: Spent 10.98s on a formula simplification that was a NOOP. DAG size: 1417 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-16 20:24:04,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:24:04,018 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 20:24:04,028 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 20:24:04,039 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 201 treesize of output 198 [2022-11-16 20:24:04,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:24:04,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:24:04,129 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 132 treesize of output 118 [2022-11-16 20:24:04,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:24:04,263 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 20:24:04,272 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 20:24:04,284 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 201 treesize of output 198 [2022-11-16 20:24:04,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:24:04,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:24:04,354 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 132 treesize of output 118 [2022-11-16 20:24:25,936 WARN L233 SmtUtils]: Spent 10.67s on a formula simplification that was a NOOP. DAG size: 1200 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-16 20:24:42,574 WARN L233 SmtUtils]: Spent 6.39s on a formula simplification that was a NOOP. DAG size: 933 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-16 20:26:55,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:26:55,049 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 20:26:55,062 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 134 treesize of output 121 [2022-11-16 20:26:55,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:26:55,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:26:55,123 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 30