./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-examples/standard_copy7_ground-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2dd60ac-6c63-4f37-a6f0-66ac3e67576e/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2dd60ac-6c63-4f37-a6f0-66ac3e67576e/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2dd60ac-6c63-4f37-a6f0-66ac3e67576e/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2dd60ac-6c63-4f37-a6f0-66ac3e67576e/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-examples/standard_copy7_ground-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2dd60ac-6c63-4f37-a6f0-66ac3e67576e/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2dd60ac-6c63-4f37-a6f0-66ac3e67576e/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 46307615818d6371ae296fa4995def50a9373bd159748713204d6c22dd4af97e --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 04:42:01,244 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 04:42:01,246 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 04:42:01,263 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 04:42:01,263 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 04:42:01,264 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 04:42:01,265 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 04:42:01,267 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 04:42:01,268 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 04:42:01,269 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 04:42:01,270 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 04:42:01,270 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 04:42:01,271 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 04:42:01,272 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 04:42:01,273 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 04:42:01,274 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 04:42:01,275 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 04:42:01,276 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 04:42:01,277 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 04:42:01,279 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 04:42:01,280 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 04:42:01,282 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 04:42:01,283 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 04:42:01,283 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 04:42:01,287 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 04:42:01,287 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 04:42:01,287 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 04:42:01,288 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 04:42:01,289 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 04:42:01,290 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 04:42:01,290 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 04:42:01,290 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 04:42:01,291 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 04:42:01,292 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 04:42:01,293 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 04:42:01,293 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 04:42:01,294 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 04:42:01,294 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 04:42:01,294 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 04:42:01,295 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 04:42:01,295 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 04:42:01,296 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2dd60ac-6c63-4f37-a6f0-66ac3e67576e/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 04:42:01,316 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 04:42:01,316 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 04:42:01,316 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 04:42:01,316 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 04:42:01,317 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 04:42:01,317 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 04:42:01,317 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 04:42:01,318 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 04:42:01,324 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 04:42:01,324 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 04:42:01,324 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 04:42:01,324 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 04:42:01,324 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 04:42:01,325 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 04:42:01,325 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 04:42:01,325 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 04:42:01,325 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 04:42:01,325 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 04:42:01,326 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 04:42:01,326 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 04:42:01,326 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 04:42:01,326 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 04:42:01,326 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 04:42:01,327 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 04:42:01,327 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 04:42:01,327 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 04:42:01,327 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 04:42:01,327 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 04:42:01,327 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 04:42:01,328 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 04:42:01,328 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 04:42:01,328 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 04:42:01,328 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 04:42:01,328 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 04:42:01,328 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 04:42:01,329 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 04:42:01,329 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 04:42:01,329 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 04:42:01,329 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 04:42:01,329 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 04:42:01,329 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 04:42:01,330 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_e2dd60ac-6c63-4f37-a6f0-66ac3e67576e/bin/utaipan-gh47qXpMRh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2dd60ac-6c63-4f37-a6f0-66ac3e67576e/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 46307615818d6371ae296fa4995def50a9373bd159748713204d6c22dd4af97e [2022-12-14 04:42:01,492 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 04:42:01,509 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 04:42:01,511 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 04:42:01,512 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 04:42:01,512 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 04:42:01,513 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2dd60ac-6c63-4f37-a6f0-66ac3e67576e/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/array-examples/standard_copy7_ground-1.i [2022-12-14 04:42:04,141 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 04:42:04,278 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 04:42:04,278 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2dd60ac-6c63-4f37-a6f0-66ac3e67576e/sv-benchmarks/c/array-examples/standard_copy7_ground-1.i [2022-12-14 04:42:04,284 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2dd60ac-6c63-4f37-a6f0-66ac3e67576e/bin/utaipan-gh47qXpMRh/data/2262380a4/758387de358a4d8ca2844703cd888637/FLAG37d8d5dbb [2022-12-14 04:42:04,296 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2dd60ac-6c63-4f37-a6f0-66ac3e67576e/bin/utaipan-gh47qXpMRh/data/2262380a4/758387de358a4d8ca2844703cd888637 [2022-12-14 04:42:04,298 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 04:42:04,299 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 04:42:04,300 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 04:42:04,300 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 04:42:04,303 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 04:42:04,304 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 04:42:04" (1/1) ... [2022-12-14 04:42:04,305 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@527c8f88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:42:04, skipping insertion in model container [2022-12-14 04:42:04,305 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 04:42:04" (1/1) ... [2022-12-14 04:42:04,311 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 04:42:04,323 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 04:42:04,439 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2dd60ac-6c63-4f37-a6f0-66ac3e67576e/sv-benchmarks/c/array-examples/standard_copy7_ground-1.i[816,829] [2022-12-14 04:42:04,458 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 04:42:04,466 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 04:42:04,475 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2dd60ac-6c63-4f37-a6f0-66ac3e67576e/sv-benchmarks/c/array-examples/standard_copy7_ground-1.i[816,829] [2022-12-14 04:42:04,488 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 04:42:04,501 INFO L208 MainTranslator]: Completed translation [2022-12-14 04:42:04,501 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:42:04 WrapperNode [2022-12-14 04:42:04,502 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 04:42:04,502 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 04:42:04,502 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 04:42:04,503 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 04:42:04,508 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:42:04" (1/1) ... [2022-12-14 04:42:04,515 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:42:04" (1/1) ... [2022-12-14 04:42:04,537 INFO L138 Inliner]: procedures = 16, calls = 49, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 163 [2022-12-14 04:42:04,537 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 04:42:04,538 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 04:42:04,538 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 04:42:04,538 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 04:42:04,545 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:42:04" (1/1) ... [2022-12-14 04:42:04,546 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:42:04" (1/1) ... [2022-12-14 04:42:04,548 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:42:04" (1/1) ... [2022-12-14 04:42:04,548 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:42:04" (1/1) ... [2022-12-14 04:42:04,555 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:42:04" (1/1) ... [2022-12-14 04:42:04,560 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:42:04" (1/1) ... [2022-12-14 04:42:04,561 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:42:04" (1/1) ... [2022-12-14 04:42:04,562 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:42:04" (1/1) ... [2022-12-14 04:42:04,565 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 04:42:04,565 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 04:42:04,566 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 04:42:04,566 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 04:42:04,567 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:42:04" (1/1) ... [2022-12-14 04:42:04,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 04:42:04,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2dd60ac-6c63-4f37-a6f0-66ac3e67576e/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 04:42:04,592 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2dd60ac-6c63-4f37-a6f0-66ac3e67576e/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 04:42:04,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2dd60ac-6c63-4f37-a6f0-66ac3e67576e/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 04:42:04,629 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 04:42:04,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 04:42:04,629 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 04:42:04,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 04:42:04,629 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 04:42:04,629 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 04:42:04,629 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 04:42:04,630 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 04:42:04,689 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 04:42:04,690 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 04:42:04,850 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 04:42:04,901 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 04:42:04,902 INFO L300 CfgBuilder]: Removed 9 assume(true) statements. [2022-12-14 04:42:04,904 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:42:04 BoogieIcfgContainer [2022-12-14 04:42:04,904 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 04:42:04,905 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 04:42:04,905 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 04:42:04,908 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 04:42:04,908 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 04:42:04" (1/3) ... [2022-12-14 04:42:04,908 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e780021 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 04:42:04, skipping insertion in model container [2022-12-14 04:42:04,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:42:04" (2/3) ... [2022-12-14 04:42:04,909 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e780021 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 04:42:04, skipping insertion in model container [2022-12-14 04:42:04,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:42:04" (3/3) ... [2022-12-14 04:42:04,910 INFO L112 eAbstractionObserver]: Analyzing ICFG standard_copy7_ground-1.i [2022-12-14 04:42:04,933 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 04:42:04,933 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 04:42:04,970 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 04:42:04,975 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;@1899b771, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 04:42:04,975 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 04:42:04,979 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 14 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:42:04,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-12-14 04:42:04,983 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:42:04,983 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:42:04,984 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:42:04,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:42:04,988 INFO L85 PathProgramCache]: Analyzing trace with hash -46756652, now seen corresponding path program 1 times [2022-12-14 04:42:04,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:42:04,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51472191] [2022-12-14 04:42:04,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:42:04,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:42:05,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:42:05,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 04:42:05,235 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:42:05,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51472191] [2022-12-14 04:42:05,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51472191] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:42:05,236 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:42:05,236 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 04:42:05,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557852314] [2022-12-14 04:42:05,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:42:05,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 04:42:05,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:42:05,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 04:42:05,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 04:42:05,277 INFO L87 Difference]: Start difference. First operand has 15 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 14 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:42:05,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:42:05,345 INFO L93 Difference]: Finished difference Result 29 states and 47 transitions. [2022-12-14 04:42:05,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 04:42:05,347 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-12-14 04:42:05,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:42:05,352 INFO L225 Difference]: With dead ends: 29 [2022-12-14 04:42:05,352 INFO L226 Difference]: Without dead ends: 15 [2022-12-14 04:42:05,354 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 04:42:05,356 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 04:42:05,357 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 8 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 04:42:05,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-12-14 04:42:05,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-12-14 04:42:05,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 14 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:42:05,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 23 transitions. [2022-12-14 04:42:05,377 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 23 transitions. Word has length 12 [2022-12-14 04:42:05,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:42:05,378 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 23 transitions. [2022-12-14 04:42:05,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:42:05,378 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 23 transitions. [2022-12-14 04:42:05,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-12-14 04:42:05,378 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:42:05,378 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:42:05,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 04:42:05,379 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:42:05,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:42:05,379 INFO L85 PathProgramCache]: Analyzing trace with hash 1778294896, now seen corresponding path program 1 times [2022-12-14 04:42:05,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:42:05,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079769744] [2022-12-14 04:42:05,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:42:05,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:42:05,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:42:05,461 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 04:42:05,461 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:42:05,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079769744] [2022-12-14 04:42:05,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079769744] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 04:42:05,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1812564580] [2022-12-14 04:42:05,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:42:05,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:42:05,462 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2dd60ac-6c63-4f37-a6f0-66ac3e67576e/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 04:42:05,463 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2dd60ac-6c63-4f37-a6f0-66ac3e67576e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 04:42:05,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2dd60ac-6c63-4f37-a6f0-66ac3e67576e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 04:42:05,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:42:05,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 04:42:05,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:42:05,568 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 04:42:05,568 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 04:42:05,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1812564580] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:42:05,569 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 04:42:05,569 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-12-14 04:42:05,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749827767] [2022-12-14 04:42:05,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:42:05,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 04:42:05,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:42:05,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 04:42:05,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 04:42:05,571 INFO L87 Difference]: Start difference. First operand 15 states and 23 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:42:05,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:42:05,615 INFO L93 Difference]: Finished difference Result 33 states and 54 transitions. [2022-12-14 04:42:05,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 04:42:05,615 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-12-14 04:42:05,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:42:05,616 INFO L225 Difference]: With dead ends: 33 [2022-12-14 04:42:05,616 INFO L226 Difference]: Without dead ends: 22 [2022-12-14 04:42:05,616 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 04:42:05,617 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 04:42:05,618 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 8 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 04:42:05,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-12-14 04:42:05,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-12-14 04:42:05,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 21 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:42:05,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 30 transitions. [2022-12-14 04:42:05,622 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 30 transitions. Word has length 13 [2022-12-14 04:42:05,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:42:05,622 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 30 transitions. [2022-12-14 04:42:05,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:42:05,622 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 30 transitions. [2022-12-14 04:42:05,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-12-14 04:42:05,623 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:42:05,623 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:42:05,629 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2dd60ac-6c63-4f37-a6f0-66ac3e67576e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 04:42:05,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2dd60ac-6c63-4f37-a6f0-66ac3e67576e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:42:05,825 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:42:05,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:42:05,827 INFO L85 PathProgramCache]: Analyzing trace with hash -713253918, now seen corresponding path program 1 times [2022-12-14 04:42:05,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:42:05,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967598438] [2022-12-14 04:42:05,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:42:05,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:42:05,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:42:05,981 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-12-14 04:42:05,982 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:42:05,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967598438] [2022-12-14 04:42:05,982 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967598438] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 04:42:05,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1269631345] [2022-12-14 04:42:05,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:42:05,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:42:05,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2dd60ac-6c63-4f37-a6f0-66ac3e67576e/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 04:42:05,984 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2dd60ac-6c63-4f37-a6f0-66ac3e67576e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 04:42:05,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2dd60ac-6c63-4f37-a6f0-66ac3e67576e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 04:42:06,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:42:06,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 04:42:06,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:42:06,096 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-12-14 04:42:06,097 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 04:42:06,112 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-12-14 04:42:06,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1269631345] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 04:42:06,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [772836909] [2022-12-14 04:42:06,128 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-12-14 04:42:06,128 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 04:42:06,131 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 04:42:06,135 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 04:42:06,135 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 04:42:06,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:06,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:06,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:06,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:06,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:06,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:06,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:06,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:06,683 INFO L321 Elim1Store]: treesize reduction 984, result has 6.9 percent of original size [2022-12-14 04:42:06,684 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 11 select indices, 11 select index equivalence classes, 19 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 51 case distinctions, treesize of input 195 treesize of output 233 [2022-12-14 04:42:06,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:06,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:06,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:06,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:06,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:06,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:06,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:06,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:06,755 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 53 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 57 [2022-12-14 04:42:06,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:06,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:06,870 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 20 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 35 [2022-12-14 04:42:07,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:07,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:07,305 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:07,306 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:07,307 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:07,374 INFO L321 Elim1Store]: treesize reduction 235, result has 16.4 percent of original size [2022-12-14 04:42:07,374 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 788 treesize of output 778 [2022-12-14 04:42:08,374 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:08,384 INFO L321 Elim1Store]: treesize reduction 18, result has 47.1 percent of original size [2022-12-14 04:42:08,384 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 29 [2022-12-14 04:42:08,403 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:08,410 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 04:42:08,411 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 04:42:08,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:08,455 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:08,456 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:08,465 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 04:42:08,465 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 116 treesize of output 121 [2022-12-14 04:42:08,493 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:08,501 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 04:42:08,502 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 04:42:08,516 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:08,524 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 04:42:08,524 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 04:42:08,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:08,554 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:08,554 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:08,571 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 04:42:08,571 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 116 treesize of output 121 [2022-12-14 04:42:08,606 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:08,613 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 04:42:08,614 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 04:42:08,628 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:08,634 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 04:42:08,634 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 04:42:08,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:08,662 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:08,662 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:08,670 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 04:42:08,670 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 116 treesize of output 121 [2022-12-14 04:42:08,701 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:08,709 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 04:42:08,710 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 04:42:08,733 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 04:42:08,734 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 04:42:08,765 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:08,766 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:08,802 INFO L321 Elim1Store]: treesize reduction 99, result has 29.3 percent of original size [2022-12-14 04:42:08,803 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 106 treesize of output 125 [2022-12-14 04:42:08,847 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:08,855 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 04:42:08,855 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 04:42:08,876 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 04:42:08,877 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 04:42:08,908 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:08,909 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:08,950 INFO L321 Elim1Store]: treesize reduction 89, result has 36.4 percent of original size [2022-12-14 04:42:08,951 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 106 treesize of output 135 [2022-12-14 04:42:09,029 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:09,037 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 04:42:09,038 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 04:42:09,057 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:09,065 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 04:42:09,066 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 04:42:09,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:09,099 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:09,100 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:09,109 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 04:42:09,110 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 116 treesize of output 121 [2022-12-14 04:42:09,154 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:09,162 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 04:42:09,162 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 04:42:09,191 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:09,197 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 04:42:09,198 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 04:42:09,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:09,243 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:09,244 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:09,254 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 04:42:09,255 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 116 treesize of output 121 [2022-12-14 04:42:09,293 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:09,302 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 04:42:09,302 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 04:42:09,317 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 04:42:09,542 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '351#(and (<= 0 |ULTIMATE.start_main_~#a4~0#1.base|) (= |ULTIMATE.start_main_~#a5~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a1~0#1.base|) (<= 100000 |ULTIMATE.start_main_~i~0#1|) (= (ite (= |ULTIMATE.start_main_#t~mem19#1| |ULTIMATE.start_main_#t~mem20#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start_main_~#a3~0#1.offset| 0) (<= 100000 |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_main_~#a1~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a7~0#1.base|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_main_~#a2~0#1.base|) (= |ULTIMATE.start_main_~#a6~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a3~0#1.base|) (<= 0 |ULTIMATE.start_main_~#a8~0#1.base|) (<= 0 |ULTIMATE.start_main_~#a5~0#1.base|) (= |ULTIMATE.start_main_~#a2~0#1.offset| 0) (= |ULTIMATE.start_main_#t~mem19#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a1~0#1.base|) (+ |ULTIMATE.start_main_~#a1~0#1.offset| (* |ULTIMATE.start_main_~x~0#1| 4)))) (= |ULTIMATE.start_main_~#a8~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#a6~0#1.base|) (= |ULTIMATE.start_main_~#a7~0#1.offset| 0) (= |ULTIMATE.start_main_~#a4~0#1.offset| 0) (= |ULTIMATE.start_main_~x~0#1| 0) (<= 0 |#StackHeapBarrier|) (= (select (select |#memory_int| |ULTIMATE.start_main_~#a8~0#1.base|) (+ |ULTIMATE.start_main_~#a8~0#1.offset| (* |ULTIMATE.start_main_~x~0#1| 4))) |ULTIMATE.start_main_#t~mem20#1|) (= |#NULL.base| 0))' at error location [2022-12-14 04:42:09,542 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 04:42:09,542 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 04:42:09,542 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-12-14 04:42:09,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305435085] [2022-12-14 04:42:09,543 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 04:42:09,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 04:42:09,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:42:09,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 04:42:09,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-12-14 04:42:09,544 INFO L87 Difference]: Start difference. First operand 22 states and 30 transitions. Second operand has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:42:09,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:42:09,580 INFO L93 Difference]: Finished difference Result 44 states and 62 transitions. [2022-12-14 04:42:09,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 04:42:09,580 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-12-14 04:42:09,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:42:09,581 INFO L225 Difference]: With dead ends: 44 [2022-12-14 04:42:09,581 INFO L226 Difference]: Without dead ends: 25 [2022-12-14 04:42:09,581 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 49 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-12-14 04:42:09,582 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 04:42:09,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 12 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 04:42:09,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-12-14 04:42:09,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2022-12-14 04:42:09,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.375) internal successors, (33), 24 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:42:09,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 33 transitions. [2022-12-14 04:42:09,585 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 33 transitions. Word has length 20 [2022-12-14 04:42:09,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:42:09,585 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 33 transitions. [2022-12-14 04:42:09,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:42:09,585 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 33 transitions. [2022-12-14 04:42:09,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-12-14 04:42:09,586 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:42:09,586 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:42:09,590 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2dd60ac-6c63-4f37-a6f0-66ac3e67576e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 04:42:09,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2dd60ac-6c63-4f37-a6f0-66ac3e67576e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:42:09,788 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:42:09,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:42:09,790 INFO L85 PathProgramCache]: Analyzing trace with hash -201535490, now seen corresponding path program 2 times [2022-12-14 04:42:09,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:42:09,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276955737] [2022-12-14 04:42:09,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:42:09,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:42:09,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:42:09,937 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 04:42:09,937 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:42:09,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276955737] [2022-12-14 04:42:09,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276955737] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 04:42:09,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1808921638] [2022-12-14 04:42:09,937 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 04:42:09,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:42:09,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2dd60ac-6c63-4f37-a6f0-66ac3e67576e/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 04:42:09,938 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2dd60ac-6c63-4f37-a6f0-66ac3e67576e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 04:42:09,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2dd60ac-6c63-4f37-a6f0-66ac3e67576e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 04:42:10,028 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-14 04:42:10,028 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 04:42:10,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 04:42:10,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:42:10,043 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 04:42:10,043 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 04:42:10,052 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 04:42:10,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1808921638] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 04:42:10,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1665193774] [2022-12-14 04:42:10,055 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-12-14 04:42:10,055 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 04:42:10,055 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 04:42:10,056 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 04:42:10,056 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 04:42:10,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:10,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:10,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:10,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:10,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:10,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:10,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:10,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:10,409 INFO L321 Elim1Store]: treesize reduction 984, result has 6.9 percent of original size [2022-12-14 04:42:10,409 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 11 select indices, 11 select index equivalence classes, 19 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 51 case distinctions, treesize of input 195 treesize of output 233 [2022-12-14 04:42:10,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:10,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:10,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:10,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:10,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:10,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:10,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:10,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:10,445 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 53 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 57 [2022-12-14 04:42:10,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:10,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:10,523 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 20 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 45 [2022-12-14 04:42:10,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:10,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:10,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:10,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:10,762 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:10,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:10,765 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:10,791 INFO L321 Elim1Store]: treesize reduction 135, result has 12.9 percent of original size [2022-12-14 04:42:10,792 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 808 treesize of output 776 [2022-12-14 04:42:10,982 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:10,989 INFO L321 Elim1Store]: treesize reduction 18, result has 47.1 percent of original size [2022-12-14 04:42:10,990 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 29 [2022-12-14 04:42:11,012 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:11,019 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 04:42:11,020 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 04:42:11,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:11,049 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:11,050 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:11,057 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 04:42:11,057 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 116 treesize of output 121 [2022-12-14 04:42:11,093 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:11,100 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 04:42:11,100 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 04:42:11,122 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 04:42:11,122 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 04:42:11,160 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:11,161 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:11,192 INFO L321 Elim1Store]: treesize reduction 99, result has 29.3 percent of original size [2022-12-14 04:42:11,193 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 106 treesize of output 125 [2022-12-14 04:42:11,255 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:11,261 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 04:42:11,262 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 04:42:11,280 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 04:42:11,280 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 04:42:11,305 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:11,306 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:11,338 INFO L321 Elim1Store]: treesize reduction 99, result has 29.3 percent of original size [2022-12-14 04:42:11,339 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 106 treesize of output 125 [2022-12-14 04:42:11,381 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:11,389 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 04:42:11,390 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 04:42:11,414 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 04:42:11,414 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 04:42:11,449 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:11,450 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:11,481 INFO L321 Elim1Store]: treesize reduction 99, result has 29.3 percent of original size [2022-12-14 04:42:11,481 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 106 treesize of output 125 [2022-12-14 04:42:11,538 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:11,546 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 04:42:11,546 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 04:42:11,561 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:11,567 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 04:42:11,568 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 04:42:11,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:11,600 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:11,601 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:11,609 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 04:42:11,610 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 116 treesize of output 121 [2022-12-14 04:42:11,642 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:11,650 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 04:42:11,650 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 04:42:11,666 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:11,674 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 04:42:11,675 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 04:42:11,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:11,710 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:11,711 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:11,721 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 04:42:11,721 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 116 treesize of output 121 [2022-12-14 04:42:11,759 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:11,767 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 04:42:11,768 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 04:42:11,819 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 04:42:11,819 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 04:42:11,850 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:11,851 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:11,878 INFO L321 Elim1Store]: treesize reduction 89, result has 36.4 percent of original size [2022-12-14 04:42:11,878 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 106 treesize of output 135 [2022-12-14 04:42:11,946 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:11,953 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 04:42:11,954 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 04:42:11,967 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 04:42:12,179 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '619#(and (<= 0 |ULTIMATE.start_main_~#a4~0#1.base|) (= |ULTIMATE.start_main_~#a5~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a1~0#1.base|) (<= 100000 |ULTIMATE.start_main_~i~0#1|) (= (ite (= |ULTIMATE.start_main_#t~mem19#1| |ULTIMATE.start_main_#t~mem20#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start_main_~#a3~0#1.offset| 0) (<= 100000 |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_main_~#a1~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a7~0#1.base|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_main_~#a2~0#1.base|) (= |ULTIMATE.start_main_~#a6~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a3~0#1.base|) (<= 0 |ULTIMATE.start_main_~#a8~0#1.base|) (<= 0 |ULTIMATE.start_main_~#a5~0#1.base|) (= |ULTIMATE.start_main_~#a2~0#1.offset| 0) (= |ULTIMATE.start_main_#t~mem19#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a1~0#1.base|) (+ |ULTIMATE.start_main_~#a1~0#1.offset| (* |ULTIMATE.start_main_~x~0#1| 4)))) (= |ULTIMATE.start_main_~#a8~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#a6~0#1.base|) (= |ULTIMATE.start_main_~#a7~0#1.offset| 0) (= |ULTIMATE.start_main_~#a4~0#1.offset| 0) (= |ULTIMATE.start_main_~x~0#1| 0) (<= 0 |#StackHeapBarrier|) (= (select (select |#memory_int| |ULTIMATE.start_main_~#a8~0#1.base|) (+ |ULTIMATE.start_main_~#a8~0#1.offset| (* |ULTIMATE.start_main_~x~0#1| 4))) |ULTIMATE.start_main_#t~mem20#1|) (= |#NULL.base| 0))' at error location [2022-12-14 04:42:12,179 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 04:42:12,179 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 04:42:12,179 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-12-14 04:42:12,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68611172] [2022-12-14 04:42:12,179 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 04:42:12,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 04:42:12,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:42:12,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 04:42:12,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-12-14 04:42:12,181 INFO L87 Difference]: Start difference. First operand 25 states and 33 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:42:12,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:42:12,248 INFO L93 Difference]: Finished difference Result 63 states and 98 transitions. [2022-12-14 04:42:12,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 04:42:12,248 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-12-14 04:42:12,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:42:12,249 INFO L225 Difference]: With dead ends: 63 [2022-12-14 04:42:12,249 INFO L226 Difference]: Without dead ends: 46 [2022-12-14 04:42:12,250 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 59 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-12-14 04:42:12,250 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 04:42:12,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 8 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 04:42:12,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-12-14 04:42:12,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2022-12-14 04:42:12,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.2) internal successors, (54), 45 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:42:12,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 54 transitions. [2022-12-14 04:42:12,254 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 54 transitions. Word has length 23 [2022-12-14 04:42:12,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:42:12,255 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 54 transitions. [2022-12-14 04:42:12,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:42:12,255 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 54 transitions. [2022-12-14 04:42:12,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-12-14 04:42:12,255 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:42:12,255 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:42:12,260 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2dd60ac-6c63-4f37-a6f0-66ac3e67576e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 04:42:12,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2dd60ac-6c63-4f37-a6f0-66ac3e67576e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:42:12,457 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:42:12,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:42:12,458 INFO L85 PathProgramCache]: Analyzing trace with hash -1922518956, now seen corresponding path program 3 times [2022-12-14 04:42:12,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:42:12,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451689357] [2022-12-14 04:42:12,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:42:12,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:42:12,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:42:12,648 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-12-14 04:42:12,648 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:42:12,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451689357] [2022-12-14 04:42:12,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451689357] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 04:42:12,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [573118078] [2022-12-14 04:42:12,648 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 04:42:12,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:42:12,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2dd60ac-6c63-4f37-a6f0-66ac3e67576e/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 04:42:12,649 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2dd60ac-6c63-4f37-a6f0-66ac3e67576e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 04:42:12,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2dd60ac-6c63-4f37-a6f0-66ac3e67576e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 04:42:12,754 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 04:42:12,754 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 04:42:12,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 04:42:12,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:42:12,768 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-12-14 04:42:12,768 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 04:42:12,803 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-12-14 04:42:12,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [573118078] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 04:42:12,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1965579219] [2022-12-14 04:42:12,804 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-12-14 04:42:12,804 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 04:42:12,805 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 04:42:12,805 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 04:42:12,805 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 04:42:12,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:12,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:12,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:12,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:12,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:12,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:12,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:12,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:13,116 INFO L321 Elim1Store]: treesize reduction 703, result has 8.6 percent of original size [2022-12-14 04:42:13,117 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 17 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 8 case distinctions, treesize of input 38 treesize of output 82 [2022-12-14 04:42:13,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:13,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:13,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:13,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:13,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:13,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:13,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:13,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:13,489 INFO L321 Elim1Store]: treesize reduction 984, result has 6.9 percent of original size [2022-12-14 04:42:13,489 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 11 select indices, 11 select index equivalence classes, 19 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 51 case distinctions, treesize of input 195 treesize of output 233 [2022-12-14 04:42:13,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:13,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:13,574 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 20 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 35 [2022-12-14 04:42:13,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:13,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:13,798 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:13,798 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:13,799 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:13,854 INFO L321 Elim1Store]: treesize reduction 235, result has 16.4 percent of original size [2022-12-14 04:42:13,854 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 788 treesize of output 778 [2022-12-14 04:42:14,772 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:14,781 INFO L321 Elim1Store]: treesize reduction 18, result has 47.1 percent of original size [2022-12-14 04:42:14,781 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 29 [2022-12-14 04:42:14,804 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:14,812 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 04:42:14,812 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 04:42:14,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:14,839 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:14,839 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:14,848 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 04:42:14,848 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 116 treesize of output 121 [2022-12-14 04:42:14,877 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:14,884 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 04:42:14,885 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 04:42:14,898 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:14,906 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 04:42:14,906 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 04:42:14,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:14,935 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:14,936 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:14,944 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 04:42:14,944 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 116 treesize of output 121 [2022-12-14 04:42:14,972 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:14,980 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 04:42:14,980 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 04:42:14,995 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:15,002 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 04:42:15,002 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 04:42:15,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:15,032 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:15,032 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:15,040 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 04:42:15,041 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 116 treesize of output 121 [2022-12-14 04:42:15,074 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:15,081 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 04:42:15,081 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 04:42:15,106 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 04:42:15,107 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 04:42:15,137 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:15,137 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:15,174 INFO L321 Elim1Store]: treesize reduction 89, result has 36.4 percent of original size [2022-12-14 04:42:15,175 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 106 treesize of output 135 [2022-12-14 04:42:15,244 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:15,250 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 04:42:15,250 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 04:42:15,269 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 04:42:15,269 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 04:42:15,296 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:15,297 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:15,334 INFO L321 Elim1Store]: treesize reduction 99, result has 29.3 percent of original size [2022-12-14 04:42:15,334 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 106 treesize of output 125 [2022-12-14 04:42:15,374 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:15,381 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 04:42:15,381 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 04:42:15,400 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 04:42:15,400 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 04:42:15,436 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:15,437 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:15,460 INFO L321 Elim1Store]: treesize reduction 99, result has 29.3 percent of original size [2022-12-14 04:42:15,461 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 106 treesize of output 125 [2022-12-14 04:42:15,514 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:15,522 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 04:42:15,522 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 04:42:15,542 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 04:42:15,542 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 04:42:15,567 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:15,567 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:15,598 INFO L321 Elim1Store]: treesize reduction 89, result has 36.4 percent of original size [2022-12-14 04:42:15,599 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 106 treesize of output 135 [2022-12-14 04:42:15,685 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:15,692 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 04:42:15,692 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 04:42:15,707 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 04:42:15,919 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1099#(and (<= 0 |ULTIMATE.start_main_~#a4~0#1.base|) (= |ULTIMATE.start_main_~#a5~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a1~0#1.base|) (<= 100000 |ULTIMATE.start_main_~i~0#1|) (= (ite (= |ULTIMATE.start_main_#t~mem19#1| |ULTIMATE.start_main_#t~mem20#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start_main_~#a3~0#1.offset| 0) (<= 100000 |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_main_~#a1~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a7~0#1.base|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_main_~#a2~0#1.base|) (= |ULTIMATE.start_main_~#a6~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a3~0#1.base|) (<= 0 |ULTIMATE.start_main_~#a8~0#1.base|) (<= 0 |ULTIMATE.start_main_~#a5~0#1.base|) (= |ULTIMATE.start_main_~#a2~0#1.offset| 0) (= |ULTIMATE.start_main_#t~mem19#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a1~0#1.base|) (+ |ULTIMATE.start_main_~#a1~0#1.offset| (* |ULTIMATE.start_main_~x~0#1| 4)))) (= |ULTIMATE.start_main_~#a8~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#a6~0#1.base|) (= |ULTIMATE.start_main_~#a7~0#1.offset| 0) (= |ULTIMATE.start_main_~#a4~0#1.offset| 0) (= |ULTIMATE.start_main_~x~0#1| 0) (<= 0 |#StackHeapBarrier|) (= (select (select |#memory_int| |ULTIMATE.start_main_~#a8~0#1.base|) (+ |ULTIMATE.start_main_~#a8~0#1.offset| (* |ULTIMATE.start_main_~x~0#1| 4))) |ULTIMATE.start_main_#t~mem20#1|) (= |#NULL.base| 0))' at error location [2022-12-14 04:42:15,919 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 04:42:15,920 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 04:42:15,920 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-12-14 04:42:15,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971202358] [2022-12-14 04:42:15,920 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 04:42:15,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-14 04:42:15,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:42:15,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-14 04:42:15,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=208, Unknown=0, NotChecked=0, Total=306 [2022-12-14 04:42:15,921 INFO L87 Difference]: Start difference. First operand 46 states and 54 transitions. Second operand has 13 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 12 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:42:15,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:42:15,980 INFO L93 Difference]: Finished difference Result 92 states and 113 transitions. [2022-12-14 04:42:15,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-14 04:42:15,980 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 12 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2022-12-14 04:42:15,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:42:15,980 INFO L225 Difference]: With dead ends: 92 [2022-12-14 04:42:15,981 INFO L226 Difference]: Without dead ends: 52 [2022-12-14 04:42:15,981 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=98, Invalid=208, Unknown=0, NotChecked=0, Total=306 [2022-12-14 04:42:15,981 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 04:42:15,982 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 04:42:15,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-12-14 04:42:15,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2022-12-14 04:42:15,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.1764705882352942) internal successors, (60), 51 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:42:15,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 60 transitions. [2022-12-14 04:42:15,987 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 60 transitions. Word has length 44 [2022-12-14 04:42:15,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:42:15,987 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 60 transitions. [2022-12-14 04:42:15,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 12 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:42:15,988 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 60 transitions. [2022-12-14 04:42:15,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-12-14 04:42:15,988 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:42:15,989 INFO L195 NwaCegarLoop]: trace histogram [10, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:42:15,993 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2dd60ac-6c63-4f37-a6f0-66ac3e67576e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-14 04:42:16,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2dd60ac-6c63-4f37-a6f0-66ac3e67576e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:42:16,190 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:42:16,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:42:16,192 INFO L85 PathProgramCache]: Analyzing trace with hash 246508244, now seen corresponding path program 4 times [2022-12-14 04:42:16,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:42:16,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233301025] [2022-12-14 04:42:16,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:42:16,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:42:16,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:42:16,495 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-12-14 04:42:16,495 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:42:16,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233301025] [2022-12-14 04:42:16,495 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233301025] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 04:42:16,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1551267117] [2022-12-14 04:42:16,496 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-14 04:42:16,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:42:16,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2dd60ac-6c63-4f37-a6f0-66ac3e67576e/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 04:42:16,497 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2dd60ac-6c63-4f37-a6f0-66ac3e67576e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 04:42:16,497 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2dd60ac-6c63-4f37-a6f0-66ac3e67576e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 04:42:16,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:42:16,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-14 04:42:16,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:42:16,650 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-12-14 04:42:16,650 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 04:42:16,769 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-12-14 04:42:16,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1551267117] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 04:42:16,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1790635856] [2022-12-14 04:42:16,771 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-12-14 04:42:16,771 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 04:42:16,771 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 04:42:16,771 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 04:42:16,771 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 04:42:16,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:16,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:16,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:16,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:16,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:16,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:16,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:16,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:17,144 INFO L321 Elim1Store]: treesize reduction 984, result has 6.9 percent of original size [2022-12-14 04:42:17,144 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 11 select indices, 11 select index equivalence classes, 19 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 51 case distinctions, treesize of input 195 treesize of output 233 [2022-12-14 04:42:17,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:17,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:17,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:17,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:17,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:17,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:17,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:17,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:17,179 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 53 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 57 [2022-12-14 04:42:17,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:17,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:17,254 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 20 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 35 [2022-12-14 04:42:17,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:17,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:17,472 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:17,472 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:17,472 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:17,528 INFO L321 Elim1Store]: treesize reduction 235, result has 16.4 percent of original size [2022-12-14 04:42:17,528 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 788 treesize of output 778 [2022-12-14 04:42:18,428 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:18,436 INFO L321 Elim1Store]: treesize reduction 18, result has 47.1 percent of original size [2022-12-14 04:42:18,436 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 29 [2022-12-14 04:42:18,456 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 04:42:18,456 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 04:42:18,485 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:18,485 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:18,510 INFO L321 Elim1Store]: treesize reduction 89, result has 36.4 percent of original size [2022-12-14 04:42:18,510 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 106 treesize of output 135 [2022-12-14 04:42:18,568 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:18,575 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 04:42:18,575 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 04:42:18,589 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:18,596 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 04:42:18,596 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 04:42:18,625 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:18,625 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:18,634 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 04:42:18,634 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 116 treesize of output 121 [2022-12-14 04:42:18,661 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:18,668 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 04:42:18,668 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 04:42:18,681 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:18,688 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 04:42:18,688 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 04:42:18,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:18,723 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:18,724 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:18,732 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 04:42:18,732 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 116 treesize of output 121 [2022-12-14 04:42:18,759 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:18,765 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 04:42:18,766 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 04:42:18,788 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 04:42:18,788 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 04:42:18,813 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:18,814 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:18,848 INFO L321 Elim1Store]: treesize reduction 99, result has 29.3 percent of original size [2022-12-14 04:42:18,848 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 106 treesize of output 125 [2022-12-14 04:42:18,906 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:18,913 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 04:42:18,913 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 04:42:18,934 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 04:42:18,934 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 04:42:18,963 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:18,964 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:19,002 INFO L321 Elim1Store]: treesize reduction 99, result has 29.3 percent of original size [2022-12-14 04:42:19,003 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 106 treesize of output 125 [2022-12-14 04:42:19,048 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:19,056 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 04:42:19,056 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 04:42:19,069 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:19,076 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 04:42:19,076 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 04:42:19,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:19,115 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:19,116 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:19,124 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 04:42:19,125 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 116 treesize of output 121 [2022-12-14 04:42:19,183 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:19,192 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 04:42:19,192 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 04:42:19,237 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 04:42:19,238 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 04:42:19,270 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:19,271 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:19,302 INFO L321 Elim1Store]: treesize reduction 89, result has 36.4 percent of original size [2022-12-14 04:42:19,302 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 106 treesize of output 135 [2022-12-14 04:42:19,345 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:19,351 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 04:42:19,351 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 04:42:19,366 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 04:42:19,747 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1697#(and (<= 0 |ULTIMATE.start_main_~#a4~0#1.base|) (= |ULTIMATE.start_main_~#a5~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a1~0#1.base|) (<= 100000 |ULTIMATE.start_main_~i~0#1|) (= (ite (= |ULTIMATE.start_main_#t~mem19#1| |ULTIMATE.start_main_#t~mem20#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start_main_~#a3~0#1.offset| 0) (<= 100000 |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_main_~#a1~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a7~0#1.base|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_main_~#a2~0#1.base|) (= |ULTIMATE.start_main_~#a6~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a3~0#1.base|) (<= 0 |ULTIMATE.start_main_~#a8~0#1.base|) (<= 0 |ULTIMATE.start_main_~#a5~0#1.base|) (= |ULTIMATE.start_main_~#a2~0#1.offset| 0) (= |ULTIMATE.start_main_#t~mem19#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a1~0#1.base|) (+ |ULTIMATE.start_main_~#a1~0#1.offset| (* |ULTIMATE.start_main_~x~0#1| 4)))) (= |ULTIMATE.start_main_~#a8~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#a6~0#1.base|) (= |ULTIMATE.start_main_~#a7~0#1.offset| 0) (= |ULTIMATE.start_main_~#a4~0#1.offset| 0) (= |ULTIMATE.start_main_~x~0#1| 0) (<= 0 |#StackHeapBarrier|) (= (select (select |#memory_int| |ULTIMATE.start_main_~#a8~0#1.base|) (+ |ULTIMATE.start_main_~#a8~0#1.offset| (* |ULTIMATE.start_main_~x~0#1| 4))) |ULTIMATE.start_main_#t~mem20#1|) (= |#NULL.base| 0))' at error location [2022-12-14 04:42:19,747 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 04:42:19,747 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 04:42:19,747 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2022-12-14 04:42:19,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627742006] [2022-12-14 04:42:19,747 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 04:42:19,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-12-14 04:42:19,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:42:19,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-12-14 04:42:19,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=320, Invalid=550, Unknown=0, NotChecked=0, Total=870 [2022-12-14 04:42:19,749 INFO L87 Difference]: Start difference. First operand 52 states and 60 transitions. Second operand has 25 states, 25 states have (on average 1.72) internal successors, (43), 24 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:42:19,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:42:19,826 INFO L93 Difference]: Finished difference Result 104 states and 131 transitions. [2022-12-14 04:42:19,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-12-14 04:42:19,827 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.72) internal successors, (43), 24 states have internal predecessors, (43), 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 50 [2022-12-14 04:42:19,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:42:19,828 INFO L225 Difference]: With dead ends: 104 [2022-12-14 04:42:19,828 INFO L226 Difference]: Without dead ends: 64 [2022-12-14 04:42:19,829 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 127 SyntacticMatches, 5 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 370 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=320, Invalid=550, Unknown=0, NotChecked=0, Total=870 [2022-12-14 04:42:19,829 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 04:42:19,830 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 04:42:19,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-12-14 04:42:19,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2022-12-14 04:42:19,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 1.1428571428571428) internal successors, (72), 63 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:42:19,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 72 transitions. [2022-12-14 04:42:19,834 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 72 transitions. Word has length 50 [2022-12-14 04:42:19,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:42:19,834 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 72 transitions. [2022-12-14 04:42:19,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.72) internal successors, (43), 24 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:42:19,834 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 72 transitions. [2022-12-14 04:42:19,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-12-14 04:42:19,835 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:42:19,835 INFO L195 NwaCegarLoop]: trace histogram [22, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:42:19,841 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2dd60ac-6c63-4f37-a6f0-66ac3e67576e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-12-14 04:42:20,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2dd60ac-6c63-4f37-a6f0-66ac3e67576e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:42:20,037 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:42:20,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:42:20,038 INFO L85 PathProgramCache]: Analyzing trace with hash 2108243924, now seen corresponding path program 5 times [2022-12-14 04:42:20,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:42:20,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191357155] [2022-12-14 04:42:20,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:42:20,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:42:20,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:42:20,691 INFO L134 CoverageAnalysis]: Checked inductivity of 323 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-12-14 04:42:20,691 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:42:20,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191357155] [2022-12-14 04:42:20,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191357155] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 04:42:20,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1267177166] [2022-12-14 04:42:20,692 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 04:42:20,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:42:20,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2dd60ac-6c63-4f37-a6f0-66ac3e67576e/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 04:42:20,693 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2dd60ac-6c63-4f37-a6f0-66ac3e67576e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 04:42:20,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2dd60ac-6c63-4f37-a6f0-66ac3e67576e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-14 04:42:20,945 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-14 04:42:20,945 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 04:42:20,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 04:42:20,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:42:20,988 INFO L134 CoverageAnalysis]: Checked inductivity of 323 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 313 trivial. 0 not checked. [2022-12-14 04:42:20,988 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 04:42:21,039 INFO L134 CoverageAnalysis]: Checked inductivity of 323 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 313 trivial. 0 not checked. [2022-12-14 04:42:21,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1267177166] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 04:42:21,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [507281096] [2022-12-14 04:42:21,041 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-12-14 04:42:21,041 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 04:42:21,041 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 04:42:21,041 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 04:42:21,041 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 04:42:21,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:21,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:21,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:21,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:21,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:21,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:21,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:21,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:21,423 INFO L321 Elim1Store]: treesize reduction 984, result has 6.9 percent of original size [2022-12-14 04:42:21,423 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 11 select indices, 11 select index equivalence classes, 19 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 51 case distinctions, treesize of input 195 treesize of output 233 [2022-12-14 04:42:21,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:21,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:21,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:21,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:21,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:21,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:21,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:21,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:21,460 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 53 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 57 [2022-12-14 04:42:21,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:21,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:21,520 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 20 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 35 [2022-12-14 04:42:21,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:21,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:21,750 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:21,750 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:21,750 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:21,804 INFO L321 Elim1Store]: treesize reduction 235, result has 16.4 percent of original size [2022-12-14 04:42:21,804 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 788 treesize of output 778 [2022-12-14 04:42:22,745 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:22,754 INFO L321 Elim1Store]: treesize reduction 18, result has 47.1 percent of original size [2022-12-14 04:42:22,755 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 29 [2022-12-14 04:42:22,776 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 04:42:22,776 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 04:42:22,804 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:22,804 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:22,844 INFO L321 Elim1Store]: treesize reduction 99, result has 29.3 percent of original size [2022-12-14 04:42:22,844 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 106 treesize of output 125 [2022-12-14 04:42:22,879 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:22,887 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 04:42:22,887 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 04:42:22,907 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 04:42:22,908 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 04:42:22,934 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:22,934 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:22,964 INFO L321 Elim1Store]: treesize reduction 99, result has 29.3 percent of original size [2022-12-14 04:42:22,964 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 106 treesize of output 125 [2022-12-14 04:42:23,015 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:23,023 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 04:42:23,023 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 04:42:23,042 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 04:42:23,042 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 04:42:23,071 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:23,071 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:23,103 INFO L321 Elim1Store]: treesize reduction 89, result has 36.4 percent of original size [2022-12-14 04:42:23,103 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 106 treesize of output 135 [2022-12-14 04:42:23,178 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:23,186 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 04:42:23,187 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 04:42:23,199 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:23,206 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 04:42:23,206 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 04:42:23,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:23,236 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:23,236 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:23,245 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 04:42:23,245 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 116 treesize of output 121 [2022-12-14 04:42:23,279 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:23,284 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 04:42:23,285 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 04:42:23,314 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:23,321 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 04:42:23,321 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 04:42:23,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:23,347 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:23,348 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:23,357 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 04:42:23,357 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 116 treesize of output 121 [2022-12-14 04:42:23,384 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:23,391 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 04:42:23,391 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 04:42:23,411 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 04:42:23,411 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 04:42:23,436 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:23,436 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:23,465 INFO L321 Elim1Store]: treesize reduction 99, result has 29.3 percent of original size [2022-12-14 04:42:23,465 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 106 treesize of output 125 [2022-12-14 04:42:23,520 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:23,527 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 04:42:23,527 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 04:42:23,547 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 04:42:23,548 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 04:42:23,575 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:23,575 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:23,603 INFO L321 Elim1Store]: treesize reduction 99, result has 29.3 percent of original size [2022-12-14 04:42:23,604 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 106 treesize of output 125 [2022-12-14 04:42:23,650 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:23,657 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 04:42:23,657 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 04:42:23,669 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 04:42:24,066 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2425#(and (<= 0 |ULTIMATE.start_main_~#a4~0#1.base|) (= |ULTIMATE.start_main_~#a5~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a1~0#1.base|) (<= 100000 |ULTIMATE.start_main_~i~0#1|) (= (ite (= |ULTIMATE.start_main_#t~mem19#1| |ULTIMATE.start_main_#t~mem20#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start_main_~#a3~0#1.offset| 0) (<= 100000 |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_main_~#a1~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a7~0#1.base|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_main_~#a2~0#1.base|) (= |ULTIMATE.start_main_~#a6~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a3~0#1.base|) (<= 0 |ULTIMATE.start_main_~#a8~0#1.base|) (<= 0 |ULTIMATE.start_main_~#a5~0#1.base|) (= |ULTIMATE.start_main_~#a2~0#1.offset| 0) (= |ULTIMATE.start_main_#t~mem19#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a1~0#1.base|) (+ |ULTIMATE.start_main_~#a1~0#1.offset| (* |ULTIMATE.start_main_~x~0#1| 4)))) (= |ULTIMATE.start_main_~#a8~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#a6~0#1.base|) (= |ULTIMATE.start_main_~#a7~0#1.offset| 0) (= |ULTIMATE.start_main_~#a4~0#1.offset| 0) (= |ULTIMATE.start_main_~x~0#1| 0) (<= 0 |#StackHeapBarrier|) (= (select (select |#memory_int| |ULTIMATE.start_main_~#a8~0#1.base|) (+ |ULTIMATE.start_main_~#a8~0#1.offset| (* |ULTIMATE.start_main_~x~0#1| 4))) |ULTIMATE.start_main_#t~mem20#1|) (= |#NULL.base| 0))' at error location [2022-12-14 04:42:24,066 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 04:42:24,066 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 04:42:24,066 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 7, 7] total 35 [2022-12-14 04:42:24,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040063251] [2022-12-14 04:42:24,066 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 04:42:24,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-12-14 04:42:24,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:42:24,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-12-14 04:42:24,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=385, Invalid=1175, Unknown=0, NotChecked=0, Total=1560 [2022-12-14 04:42:24,067 INFO L87 Difference]: Start difference. First operand 64 states and 72 transitions. Second operand has 35 states, 35 states have (on average 1.6857142857142857) internal successors, (59), 35 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:42:24,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:42:24,199 INFO L93 Difference]: Finished difference Result 147 states and 205 transitions. [2022-12-14 04:42:24,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-12-14 04:42:24,199 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.6857142857142857) internal successors, (59), 35 states have internal predecessors, (59), 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 62 [2022-12-14 04:42:24,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:42:24,199 INFO L225 Difference]: With dead ends: 147 [2022-12-14 04:42:24,199 INFO L226 Difference]: Without dead ends: 107 [2022-12-14 04:42:24,200 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 165 SyntacticMatches, 5 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 570 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=385, Invalid=1175, Unknown=0, NotChecked=0, Total=1560 [2022-12-14 04:42:24,200 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 223 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 223 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 04:42:24,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 16 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [223 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 04:42:24,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2022-12-14 04:42:24,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2022-12-14 04:42:24,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 106 states have (on average 1.0849056603773586) internal successors, (115), 106 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:42:24,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 115 transitions. [2022-12-14 04:42:24,206 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 115 transitions. Word has length 62 [2022-12-14 04:42:24,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:42:24,206 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 115 transitions. [2022-12-14 04:42:24,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.6857142857142857) internal successors, (59), 35 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:42:24,207 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 115 transitions. [2022-12-14 04:42:24,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-12-14 04:42:24,208 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:42:24,208 INFO L195 NwaCegarLoop]: trace histogram [23, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:42:24,213 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2dd60ac-6c63-4f37-a6f0-66ac3e67576e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-14 04:42:24,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2dd60ac-6c63-4f37-a6f0-66ac3e67576e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:42:24,409 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:42:24,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:42:24,409 INFO L85 PathProgramCache]: Analyzing trace with hash 1397650480, now seen corresponding path program 6 times [2022-12-14 04:42:24,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:42:24,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529876861] [2022-12-14 04:42:24,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:42:24,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:42:24,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:42:25,100 INFO L134 CoverageAnalysis]: Checked inductivity of 661 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2022-12-14 04:42:25,100 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:42:25,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529876861] [2022-12-14 04:42:25,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529876861] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 04:42:25,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [5637762] [2022-12-14 04:42:25,101 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 04:42:25,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:42:25,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2dd60ac-6c63-4f37-a6f0-66ac3e67576e/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 04:42:25,102 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2dd60ac-6c63-4f37-a6f0-66ac3e67576e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 04:42:25,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2dd60ac-6c63-4f37-a6f0-66ac3e67576e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-14 04:42:25,333 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 04:42:25,333 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 04:42:25,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 1078 conjuncts, 25 conjunts are in the unsatisfiable core [2022-12-14 04:42:25,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:42:25,375 INFO L134 CoverageAnalysis]: Checked inductivity of 661 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2022-12-14 04:42:25,375 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 04:42:25,778 INFO L134 CoverageAnalysis]: Checked inductivity of 661 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2022-12-14 04:42:25,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [5637762] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 04:42:25,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2010997480] [2022-12-14 04:42:25,780 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-12-14 04:42:25,780 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 04:42:25,780 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 04:42:25,780 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 04:42:25,780 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 04:42:25,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:25,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:25,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:25,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:25,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:25,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:25,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:25,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:26,042 INFO L321 Elim1Store]: treesize reduction 703, result has 8.6 percent of original size [2022-12-14 04:42:26,042 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 17 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 8 case distinctions, treesize of input 38 treesize of output 82 [2022-12-14 04:42:26,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:26,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:26,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:26,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:26,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:26,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:26,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:26,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:26,406 INFO L321 Elim1Store]: treesize reduction 984, result has 6.9 percent of original size [2022-12-14 04:42:26,406 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 11 select indices, 11 select index equivalence classes, 19 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 51 case distinctions, treesize of input 195 treesize of output 233 [2022-12-14 04:42:26,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:26,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:26,486 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 20 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 45 [2022-12-14 04:42:26,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:26,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:26,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:26,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:26,711 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:26,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:26,712 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:26,737 INFO L321 Elim1Store]: treesize reduction 135, result has 12.9 percent of original size [2022-12-14 04:42:26,737 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 808 treesize of output 776 [2022-12-14 04:42:26,897 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:26,904 INFO L321 Elim1Store]: treesize reduction 18, result has 47.1 percent of original size [2022-12-14 04:42:26,904 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 29 [2022-12-14 04:42:26,921 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:26,926 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 04:42:26,926 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 04:42:26,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:26,952 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:26,953 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:26,960 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 04:42:26,960 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 116 treesize of output 121 [2022-12-14 04:42:26,984 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:26,989 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 04:42:26,990 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 04:42:27,002 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:27,008 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 04:42:27,008 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 04:42:27,039 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:27,039 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:27,046 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 04:42:27,046 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 116 treesize of output 121 [2022-12-14 04:42:27,073 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:27,078 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 04:42:27,078 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 04:42:27,090 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:27,096 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 04:42:27,096 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 04:42:27,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:27,122 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:27,122 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:27,129 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 04:42:27,130 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 116 treesize of output 121 [2022-12-14 04:42:27,154 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:27,160 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 04:42:27,160 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 04:42:27,172 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:27,177 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 04:42:27,178 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 04:42:27,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:27,204 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:27,205 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:27,212 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 04:42:27,213 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 116 treesize of output 121 [2022-12-14 04:42:27,249 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:27,254 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 04:42:27,254 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 04:42:27,285 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 04:42:27,286 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 04:42:27,312 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:27,312 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:27,337 INFO L321 Elim1Store]: treesize reduction 89, result has 36.4 percent of original size [2022-12-14 04:42:27,337 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 106 treesize of output 135 [2022-12-14 04:42:27,414 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:27,422 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 04:42:27,422 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 04:42:27,438 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 04:42:27,439 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 04:42:27,466 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:27,466 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:27,487 INFO L321 Elim1Store]: treesize reduction 99, result has 29.3 percent of original size [2022-12-14 04:42:27,487 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 106 treesize of output 125 [2022-12-14 04:42:27,538 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:27,543 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 04:42:27,544 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 04:42:27,559 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:27,564 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 04:42:27,564 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 04:42:27,590 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:27,590 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:27,597 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 04:42:27,597 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 116 treesize of output 121 [2022-12-14 04:42:27,623 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:27,628 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 04:42:27,628 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 04:42:27,640 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 04:42:28,136 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3599#(and (<= 0 |ULTIMATE.start_main_~#a4~0#1.base|) (= |ULTIMATE.start_main_~#a5~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a1~0#1.base|) (<= 100000 |ULTIMATE.start_main_~i~0#1|) (= (ite (= |ULTIMATE.start_main_#t~mem19#1| |ULTIMATE.start_main_#t~mem20#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start_main_~#a3~0#1.offset| 0) (<= 100000 |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_main_~#a1~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a7~0#1.base|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_main_~#a2~0#1.base|) (= |ULTIMATE.start_main_~#a6~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a3~0#1.base|) (<= 0 |ULTIMATE.start_main_~#a8~0#1.base|) (<= 0 |ULTIMATE.start_main_~#a5~0#1.base|) (= |ULTIMATE.start_main_~#a2~0#1.offset| 0) (= |ULTIMATE.start_main_#t~mem19#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a1~0#1.base|) (+ |ULTIMATE.start_main_~#a1~0#1.offset| (* |ULTIMATE.start_main_~x~0#1| 4)))) (= |ULTIMATE.start_main_~#a8~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#a6~0#1.base|) (= |ULTIMATE.start_main_~#a7~0#1.offset| 0) (= |ULTIMATE.start_main_~#a4~0#1.offset| 0) (= |ULTIMATE.start_main_~x~0#1| 0) (<= 0 |#StackHeapBarrier|) (= (select (select |#memory_int| |ULTIMATE.start_main_~#a8~0#1.base|) (+ |ULTIMATE.start_main_~#a8~0#1.offset| (* |ULTIMATE.start_main_~x~0#1| 4))) |ULTIMATE.start_main_#t~mem20#1|) (= |#NULL.base| 0))' at error location [2022-12-14 04:42:28,136 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 04:42:28,137 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 04:42:28,137 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 50 [2022-12-14 04:42:28,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703677178] [2022-12-14 04:42:28,137 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 04:42:28,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-12-14 04:42:28,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:42:28,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-12-14 04:42:28,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1295, Invalid=1785, Unknown=0, NotChecked=0, Total=3080 [2022-12-14 04:42:28,141 INFO L87 Difference]: Start difference. First operand 107 states and 115 transitions. Second operand has 51 states, 51 states have (on average 1.3529411764705883) internal successors, (69), 50 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:42:28,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:42:28,220 INFO L93 Difference]: Finished difference Result 214 states and 254 transitions. [2022-12-14 04:42:28,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-12-14 04:42:28,221 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 1.3529411764705883) internal successors, (69), 50 states have internal predecessors, (69), 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 105 [2022-12-14 04:42:28,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:42:28,221 INFO L225 Difference]: With dead ends: 214 [2022-12-14 04:42:28,221 INFO L226 Difference]: Without dead ends: 132 [2022-12-14 04:42:28,222 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 273 SyntacticMatches, 11 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1244 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1295, Invalid=1785, Unknown=0, NotChecked=0, Total=3080 [2022-12-14 04:42:28,222 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 04:42:28,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 32 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 04:42:28,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2022-12-14 04:42:28,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2022-12-14 04:42:28,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 131 states have (on average 1.0687022900763359) internal successors, (140), 131 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:42:28,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 140 transitions. [2022-12-14 04:42:28,229 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 140 transitions. Word has length 105 [2022-12-14 04:42:28,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:42:28,229 INFO L495 AbstractCegarLoop]: Abstraction has 132 states and 140 transitions. [2022-12-14 04:42:28,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 1.3529411764705883) internal successors, (69), 50 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:42:28,229 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 140 transitions. [2022-12-14 04:42:28,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-12-14 04:42:28,230 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:42:28,230 INFO L195 NwaCegarLoop]: trace histogram [48, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:42:28,236 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2dd60ac-6c63-4f37-a6f0-66ac3e67576e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-14 04:42:28,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2dd60ac-6c63-4f37-a6f0-66ac3e67576e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:42:28,432 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:42:28,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:42:28,433 INFO L85 PathProgramCache]: Analyzing trace with hash -1580408812, now seen corresponding path program 7 times [2022-12-14 04:42:28,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:42:28,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807193398] [2022-12-14 04:42:28,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:42:28,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:42:28,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:42:30,292 INFO L134 CoverageAnalysis]: Checked inductivity of 1561 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2022-12-14 04:42:30,292 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:42:30,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807193398] [2022-12-14 04:42:30,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807193398] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 04:42:30,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [730037847] [2022-12-14 04:42:30,292 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-14 04:42:30,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:42:30,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2dd60ac-6c63-4f37-a6f0-66ac3e67576e/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 04:42:30,293 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2dd60ac-6c63-4f37-a6f0-66ac3e67576e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 04:42:30,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2dd60ac-6c63-4f37-a6f0-66ac3e67576e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-14 04:42:30,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:42:30,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 1503 conjuncts, 50 conjunts are in the unsatisfiable core [2022-12-14 04:42:30,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:42:30,714 INFO L134 CoverageAnalysis]: Checked inductivity of 1561 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2022-12-14 04:42:30,714 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 04:42:32,233 INFO L134 CoverageAnalysis]: Checked inductivity of 1561 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2022-12-14 04:42:32,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [730037847] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 04:42:32,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1759703417] [2022-12-14 04:42:32,235 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-12-14 04:42:32,235 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 04:42:32,235 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 04:42:32,235 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 04:42:32,235 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 04:42:32,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:32,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:32,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:32,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:32,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:32,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:32,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:32,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:32,563 INFO L321 Elim1Store]: treesize reduction 984, result has 6.9 percent of original size [2022-12-14 04:42:32,563 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 11 select indices, 11 select index equivalence classes, 19 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 51 case distinctions, treesize of input 195 treesize of output 233 [2022-12-14 04:42:32,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:32,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:32,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:32,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:32,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:32,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:32,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:32,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:32,595 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 53 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 57 [2022-12-14 04:42:32,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:32,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:32,663 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 20 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 35 [2022-12-14 04:42:32,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:32,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:32,882 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:32,882 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:32,882 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:32,932 INFO L321 Elim1Store]: treesize reduction 235, result has 16.4 percent of original size [2022-12-14 04:42:32,933 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 788 treesize of output 778 [2022-12-14 04:42:33,832 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:33,839 INFO L321 Elim1Store]: treesize reduction 18, result has 47.1 percent of original size [2022-12-14 04:42:33,840 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 29 [2022-12-14 04:42:33,858 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:33,864 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 04:42:33,864 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 04:42:33,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:33,906 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:33,907 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:33,915 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 04:42:33,915 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 116 treesize of output 121 [2022-12-14 04:42:33,948 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:33,958 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 04:42:33,958 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 04:42:33,974 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:33,981 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 04:42:33,981 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 04:42:34,018 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:34,018 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:34,026 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 04:42:34,026 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 116 treesize of output 121 [2022-12-14 04:42:34,057 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:34,062 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 04:42:34,062 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 04:42:34,080 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 04:42:34,080 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 04:42:34,107 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:34,108 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:34,131 INFO L321 Elim1Store]: treesize reduction 89, result has 36.4 percent of original size [2022-12-14 04:42:34,131 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 106 treesize of output 135 [2022-12-14 04:42:34,178 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:34,184 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 04:42:34,184 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 04:42:34,194 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:34,200 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 04:42:34,200 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 04:42:34,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:34,226 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:34,226 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:34,234 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 04:42:34,235 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 116 treesize of output 121 [2022-12-14 04:42:34,267 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:34,274 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 04:42:34,275 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 04:42:34,310 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:34,317 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 04:42:34,317 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 04:42:34,343 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:34,344 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:34,352 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 04:42:34,352 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 116 treesize of output 121 [2022-12-14 04:42:34,384 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:34,390 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 04:42:34,391 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 04:42:34,403 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:34,410 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 04:42:34,410 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 04:42:34,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:34,436 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:34,436 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:34,444 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 04:42:34,444 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 116 treesize of output 121 [2022-12-14 04:42:34,481 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:34,487 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 04:42:34,487 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 04:42:34,524 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:34,529 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 04:42:34,529 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 04:42:34,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:34,554 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:34,554 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:34,561 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 04:42:34,561 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 116 treesize of output 121 [2022-12-14 04:42:34,587 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:34,593 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 04:42:34,593 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 04:42:34,607 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 04:42:35,843 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5157#(and (<= 0 |ULTIMATE.start_main_~#a4~0#1.base|) (= |ULTIMATE.start_main_~#a5~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a1~0#1.base|) (<= 100000 |ULTIMATE.start_main_~i~0#1|) (= (ite (= |ULTIMATE.start_main_#t~mem19#1| |ULTIMATE.start_main_#t~mem20#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start_main_~#a3~0#1.offset| 0) (<= 100000 |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_main_~#a1~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a7~0#1.base|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_main_~#a2~0#1.base|) (= |ULTIMATE.start_main_~#a6~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a3~0#1.base|) (<= 0 |ULTIMATE.start_main_~#a8~0#1.base|) (<= 0 |ULTIMATE.start_main_~#a5~0#1.base|) (= |ULTIMATE.start_main_~#a2~0#1.offset| 0) (= |ULTIMATE.start_main_#t~mem19#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a1~0#1.base|) (+ |ULTIMATE.start_main_~#a1~0#1.offset| (* |ULTIMATE.start_main_~x~0#1| 4)))) (= |ULTIMATE.start_main_~#a8~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#a6~0#1.base|) (= |ULTIMATE.start_main_~#a7~0#1.offset| 0) (= |ULTIMATE.start_main_~#a4~0#1.offset| 0) (= |ULTIMATE.start_main_~x~0#1| 0) (<= 0 |#StackHeapBarrier|) (= (select (select |#memory_int| |ULTIMATE.start_main_~#a8~0#1.base|) (+ |ULTIMATE.start_main_~#a8~0#1.offset| (* |ULTIMATE.start_main_~x~0#1| 4))) |ULTIMATE.start_main_#t~mem20#1|) (= |#NULL.base| 0))' at error location [2022-12-14 04:42:35,843 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 04:42:35,843 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 04:42:35,844 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50, 50] total 100 [2022-12-14 04:42:35,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669078592] [2022-12-14 04:42:35,844 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 04:42:35,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 101 states [2022-12-14 04:42:35,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:42:35,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2022-12-14 04:42:35,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5070, Invalid=6060, Unknown=0, NotChecked=0, Total=11130 [2022-12-14 04:42:35,849 INFO L87 Difference]: Start difference. First operand 132 states and 140 transitions. Second operand has 101 states, 101 states have (on average 1.1782178217821782) internal successors, (119), 100 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:42:36,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:42:36,021 INFO L93 Difference]: Finished difference Result 264 states and 329 transitions. [2022-12-14 04:42:36,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2022-12-14 04:42:36,022 INFO L78 Accepts]: Start accepts. Automaton has has 101 states, 101 states have (on average 1.1782178217821782) internal successors, (119), 100 states have internal predecessors, (119), 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 130 [2022-12-14 04:42:36,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:42:36,023 INFO L225 Difference]: With dead ends: 264 [2022-12-14 04:42:36,024 INFO L226 Difference]: Without dead ends: 182 [2022-12-14 04:42:36,028 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 438 GetRequests, 312 SyntacticMatches, 22 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4161 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=5070, Invalid=6060, Unknown=0, NotChecked=0, Total=11130 [2022-12-14 04:42:36,028 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 04:42:36,028 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 04:42:36,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2022-12-14 04:42:36,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2022-12-14 04:42:36,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 181 states have (on average 1.0497237569060773) internal successors, (190), 181 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:42:36,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 190 transitions. [2022-12-14 04:42:36,035 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 190 transitions. Word has length 130 [2022-12-14 04:42:36,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:42:36,036 INFO L495 AbstractCegarLoop]: Abstraction has 182 states and 190 transitions. [2022-12-14 04:42:36,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 101 states, 101 states have (on average 1.1782178217821782) internal successors, (119), 100 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:42:36,036 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 190 transitions. [2022-12-14 04:42:36,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2022-12-14 04:42:36,037 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:42:36,037 INFO L195 NwaCegarLoop]: trace histogram [98, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:42:36,044 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2dd60ac-6c63-4f37-a6f0-66ac3e67576e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-14 04:42:36,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2dd60ac-6c63-4f37-a6f0-66ac3e67576e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:42:36,239 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:42:36,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:42:36,240 INFO L85 PathProgramCache]: Analyzing trace with hash 950994836, now seen corresponding path program 8 times [2022-12-14 04:42:36,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:42:36,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324994757] [2022-12-14 04:42:36,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:42:36,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:42:36,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:42:41,532 INFO L134 CoverageAnalysis]: Checked inductivity of 5236 backedges. 0 proven. 4851 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2022-12-14 04:42:41,533 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:42:41,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324994757] [2022-12-14 04:42:41,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324994757] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 04:42:41,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2102931891] [2022-12-14 04:42:41,533 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 04:42:41,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:42:41,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2dd60ac-6c63-4f37-a6f0-66ac3e67576e/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 04:42:41,534 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2dd60ac-6c63-4f37-a6f0-66ac3e67576e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 04:42:41,534 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2dd60ac-6c63-4f37-a6f0-66ac3e67576e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-14 04:42:53,652 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-12-14 04:42:53,652 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 04:42:53,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 857 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-14 04:42:53,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:42:53,931 INFO L134 CoverageAnalysis]: Checked inductivity of 5236 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 5181 trivial. 0 not checked. [2022-12-14 04:42:53,931 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 04:42:54,373 INFO L134 CoverageAnalysis]: Checked inductivity of 5236 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 5181 trivial. 0 not checked. [2022-12-14 04:42:54,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2102931891] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 04:42:54,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1058222853] [2022-12-14 04:42:54,375 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-12-14 04:42:54,375 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 04:42:54,375 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 04:42:54,375 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 04:42:54,375 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 04:42:54,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:54,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:54,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:54,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:54,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:54,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:54,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:54,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:54,676 INFO L321 Elim1Store]: treesize reduction 703, result has 8.6 percent of original size [2022-12-14 04:42:54,677 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 17 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 8 case distinctions, treesize of input 38 treesize of output 82 [2022-12-14 04:42:54,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:54,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:54,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:54,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:54,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:54,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:54,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:54,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:55,126 INFO L321 Elim1Store]: treesize reduction 984, result has 6.9 percent of original size [2022-12-14 04:42:55,127 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 11 select indices, 11 select index equivalence classes, 19 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 51 case distinctions, treesize of input 195 treesize of output 233 [2022-12-14 04:42:55,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:55,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:55,238 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 20 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 45 [2022-12-14 04:42:55,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:55,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:55,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:55,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:55,483 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:55,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:42:55,486 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:55,517 INFO L321 Elim1Store]: treesize reduction 135, result has 12.9 percent of original size [2022-12-14 04:42:55,518 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 808 treesize of output 776 [2022-12-14 04:42:55,688 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:55,699 INFO L321 Elim1Store]: treesize reduction 18, result has 47.1 percent of original size [2022-12-14 04:42:55,699 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 29 [2022-12-14 04:42:55,724 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 04:42:55,724 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 04:42:55,754 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:55,755 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:55,798 INFO L321 Elim1Store]: treesize reduction 99, result has 29.3 percent of original size [2022-12-14 04:42:55,799 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 106 treesize of output 125 [2022-12-14 04:42:55,845 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:55,853 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 04:42:55,853 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 04:42:55,870 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 04:42:55,870 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 04:42:55,895 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:55,895 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:55,927 INFO L321 Elim1Store]: treesize reduction 99, result has 29.3 percent of original size [2022-12-14 04:42:55,927 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 106 treesize of output 125 [2022-12-14 04:42:55,960 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:55,968 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 04:42:55,968 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 04:42:55,987 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 04:42:55,987 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 04:42:56,029 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:56,030 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:56,058 INFO L321 Elim1Store]: treesize reduction 99, result has 29.3 percent of original size [2022-12-14 04:42:56,058 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 106 treesize of output 125 [2022-12-14 04:42:56,099 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:56,106 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 04:42:56,106 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 04:42:56,125 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 04:42:56,125 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 04:42:56,152 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:56,153 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:56,182 INFO L321 Elim1Store]: treesize reduction 99, result has 29.3 percent of original size [2022-12-14 04:42:56,182 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 106 treesize of output 125 [2022-12-14 04:42:56,227 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:56,235 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 04:42:56,235 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 04:42:56,248 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:56,255 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 04:42:56,255 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 04:42:56,280 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:56,281 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:56,290 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 04:42:56,290 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 116 treesize of output 121 [2022-12-14 04:42:56,313 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:56,320 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 04:42:56,321 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 04:42:56,342 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 04:42:56,342 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 04:42:56,369 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:56,369 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:56,400 INFO L321 Elim1Store]: treesize reduction 89, result has 36.4 percent of original size [2022-12-14 04:42:56,400 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 106 treesize of output 135 [2022-12-14 04:42:56,436 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:56,443 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 04:42:56,443 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 04:42:56,456 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:56,464 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 04:42:56,464 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 04:42:56,490 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:56,490 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:56,498 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 04:42:56,499 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 116 treesize of output 121 [2022-12-14 04:42:56,522 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:42:56,528 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 04:42:56,528 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 04:42:56,541 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 04:42:56,997 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '7237#(and (<= 0 |ULTIMATE.start_main_~#a4~0#1.base|) (= |ULTIMATE.start_main_~#a5~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a1~0#1.base|) (<= 100000 |ULTIMATE.start_main_~i~0#1|) (= (ite (= |ULTIMATE.start_main_#t~mem19#1| |ULTIMATE.start_main_#t~mem20#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start_main_~#a3~0#1.offset| 0) (<= 100000 |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_main_~#a1~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a7~0#1.base|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_main_~#a2~0#1.base|) (= |ULTIMATE.start_main_~#a6~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a3~0#1.base|) (<= 0 |ULTIMATE.start_main_~#a8~0#1.base|) (<= 0 |ULTIMATE.start_main_~#a5~0#1.base|) (= |ULTIMATE.start_main_~#a2~0#1.offset| 0) (= |ULTIMATE.start_main_#t~mem19#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a1~0#1.base|) (+ |ULTIMATE.start_main_~#a1~0#1.offset| (* |ULTIMATE.start_main_~x~0#1| 4)))) (= |ULTIMATE.start_main_~#a8~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#a6~0#1.base|) (= |ULTIMATE.start_main_~#a7~0#1.offset| 0) (= |ULTIMATE.start_main_~#a4~0#1.offset| 0) (= |ULTIMATE.start_main_~x~0#1| 0) (<= 0 |#StackHeapBarrier|) (= (select (select |#memory_int| |ULTIMATE.start_main_~#a8~0#1.base|) (+ |ULTIMATE.start_main_~#a8~0#1.offset| (* |ULTIMATE.start_main_~x~0#1| 4))) |ULTIMATE.start_main_#t~mem20#1|) (= |#NULL.base| 0))' at error location [2022-12-14 04:42:56,997 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 04:42:56,997 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 04:42:56,997 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 13, 13] total 123 [2022-12-14 04:42:56,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818649216] [2022-12-14 04:42:56,997 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 04:42:56,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 123 states [2022-12-14 04:42:56,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:42:56,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 123 interpolants. [2022-12-14 04:42:57,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5345, Invalid=10911, Unknown=0, NotChecked=0, Total=16256 [2022-12-14 04:42:57,002 INFO L87 Difference]: Start difference. First operand 182 states and 190 transitions. Second operand has 123 states, 123 states have (on average 1.1626016260162602) internal successors, (143), 123 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:42:57,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:42:57,500 INFO L93 Difference]: Finished difference Result 349 states and 449 transitions. [2022-12-14 04:42:57,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2022-12-14 04:42:57,501 INFO L78 Accepts]: Start accepts. Automaton has has 123 states, 123 states have (on average 1.1626016260162602) internal successors, (143), 123 states have internal predecessors, (143), 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 180 [2022-12-14 04:42:57,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:42:57,502 INFO L225 Difference]: With dead ends: 349 [2022-12-14 04:42:57,502 INFO L226 Difference]: Without dead ends: 267 [2022-12-14 04:42:57,504 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 638 GetRequests, 512 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2801 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=5345, Invalid=10911, Unknown=0, NotChecked=0, Total=16256 [2022-12-14 04:42:57,505 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 523 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 523 IncrementalHoareTripleChecker+Valid, 423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 04:42:57,505 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 48 Invalid, 946 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [523 Valid, 423 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 04:42:57,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2022-12-14 04:42:57,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 267. [2022-12-14 04:42:57,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 266 states have (on average 1.0338345864661653) internal successors, (275), 266 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:42:57,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 275 transitions. [2022-12-14 04:42:57,514 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 275 transitions. Word has length 180 [2022-12-14 04:42:57,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:42:57,514 INFO L495 AbstractCegarLoop]: Abstraction has 267 states and 275 transitions. [2022-12-14 04:42:57,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 123 states, 123 states have (on average 1.1626016260162602) internal successors, (143), 123 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:42:57,514 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 275 transitions. [2022-12-14 04:42:57,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2022-12-14 04:42:57,517 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:42:57,517 INFO L195 NwaCegarLoop]: trace histogram [99, 22, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:42:57,534 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2dd60ac-6c63-4f37-a6f0-66ac3e67576e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-12-14 04:42:57,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2dd60ac-6c63-4f37-a6f0-66ac3e67576e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-14 04:42:57,718 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:42:57,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:42:57,719 INFO L85 PathProgramCache]: Analyzing trace with hash 393313968, now seen corresponding path program 9 times [2022-12-14 04:42:57,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:42:57,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20769768] [2022-12-14 04:42:57,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:42:57,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:42:57,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:43:03,631 INFO L134 CoverageAnalysis]: Checked inductivity of 6721 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 1771 trivial. 0 not checked. [2022-12-14 04:43:03,631 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:43:03,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20769768] [2022-12-14 04:43:03,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20769768] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 04:43:03,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1607839536] [2022-12-14 04:43:03,631 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 04:43:03,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:43:03,631 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2dd60ac-6c63-4f37-a6f0-66ac3e67576e/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 04:43:03,632 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2dd60ac-6c63-4f37-a6f0-66ac3e67576e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 04:43:03,633 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2dd60ac-6c63-4f37-a6f0-66ac3e67576e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-14 04:43:04,154 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 04:43:04,154 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 04:43:04,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 2958 conjuncts, 101 conjunts are in the unsatisfiable core [2022-12-14 04:43:04,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:43:04,267 INFO L134 CoverageAnalysis]: Checked inductivity of 6721 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 1771 trivial. 0 not checked. [2022-12-14 04:43:04,267 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 04:43:11,933 INFO L134 CoverageAnalysis]: Checked inductivity of 6721 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 1771 trivial. 0 not checked. [2022-12-14 04:43:11,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1607839536] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 04:43:11,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1221419475] [2022-12-14 04:43:11,935 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-12-14 04:43:11,935 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 04:43:11,935 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 04:43:11,935 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 04:43:11,935 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 04:43:11,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:43:11,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:43:11,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:43:11,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:43:11,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:43:11,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:43:11,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:43:11,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:43:12,200 INFO L321 Elim1Store]: treesize reduction 703, result has 8.6 percent of original size [2022-12-14 04:43:12,201 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 17 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 8 case distinctions, treesize of input 38 treesize of output 82 [2022-12-14 04:43:12,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:43:12,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:43:12,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:43:12,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:43:12,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:43:12,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:43:12,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:43:12,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:43:12,539 INFO L321 Elim1Store]: treesize reduction 984, result has 6.9 percent of original size [2022-12-14 04:43:12,540 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 11 select indices, 11 select index equivalence classes, 19 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 51 case distinctions, treesize of input 195 treesize of output 233 [2022-12-14 04:43:12,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:43:12,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:43:12,616 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 20 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 45 [2022-12-14 04:43:12,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:43:12,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:43:12,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:43:12,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:43:12,825 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:43:12,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:43:12,828 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:43:12,860 INFO L321 Elim1Store]: treesize reduction 135, result has 12.9 percent of original size [2022-12-14 04:43:12,861 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 808 treesize of output 776 [2022-12-14 04:43:13,032 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:43:13,040 INFO L321 Elim1Store]: treesize reduction 18, result has 47.1 percent of original size [2022-12-14 04:43:13,041 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 29 [2022-12-14 04:43:13,059 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:43:13,066 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 04:43:13,066 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 04:43:13,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:43:13,094 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:43:13,094 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:43:13,103 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 04:43:13,103 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 116 treesize of output 121 [2022-12-14 04:43:13,131 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:43:13,139 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 04:43:13,139 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 04:43:13,152 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:43:13,159 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 04:43:13,159 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 04:43:13,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:43:13,191 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:43:13,192 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:43:13,200 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 04:43:13,200 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 116 treesize of output 121 [2022-12-14 04:43:13,227 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:43:13,233 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 04:43:13,233 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 04:43:13,244 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:43:13,250 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 04:43:13,250 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 04:43:13,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:43:13,274 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:43:13,274 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:43:13,281 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 04:43:13,281 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 116 treesize of output 121 [2022-12-14 04:43:13,309 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:43:13,315 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 04:43:13,315 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 04:43:13,327 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:43:13,332 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 04:43:13,333 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 04:43:13,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:43:13,356 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:43:13,356 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:43:13,363 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 04:43:13,363 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 116 treesize of output 121 [2022-12-14 04:43:13,396 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:43:13,402 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 04:43:13,402 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 04:43:13,430 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:43:13,435 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 04:43:13,435 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 04:43:13,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:43:13,460 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:43:13,461 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:43:13,467 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 04:43:13,467 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 116 treesize of output 121 [2022-12-14 04:43:13,501 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:43:13,509 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 04:43:13,509 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 04:43:13,528 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 04:43:13,528 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 04:43:13,554 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:43:13,554 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:43:13,586 INFO L321 Elim1Store]: treesize reduction 89, result has 36.4 percent of original size [2022-12-14 04:43:13,586 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 106 treesize of output 135 [2022-12-14 04:43:13,624 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:43:13,629 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 04:43:13,629 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 04:43:13,648 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 04:43:13,649 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 04:43:13,676 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:43:13,677 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:43:13,708 INFO L321 Elim1Store]: treesize reduction 99, result has 29.3 percent of original size [2022-12-14 04:43:13,708 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 106 treesize of output 125 [2022-12-14 04:43:13,763 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:43:13,769 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 04:43:13,770 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 04:43:13,786 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 04:43:16,556 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '10247#(and (<= 0 |ULTIMATE.start_main_~#a4~0#1.base|) (= |ULTIMATE.start_main_~#a5~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a1~0#1.base|) (<= 100000 |ULTIMATE.start_main_~i~0#1|) (= (ite (= |ULTIMATE.start_main_#t~mem19#1| |ULTIMATE.start_main_#t~mem20#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start_main_~#a3~0#1.offset| 0) (<= 100000 |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_main_~#a1~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a7~0#1.base|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_main_~#a2~0#1.base|) (= |ULTIMATE.start_main_~#a6~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a3~0#1.base|) (<= 0 |ULTIMATE.start_main_~#a8~0#1.base|) (<= 0 |ULTIMATE.start_main_~#a5~0#1.base|) (= |ULTIMATE.start_main_~#a2~0#1.offset| 0) (= |ULTIMATE.start_main_#t~mem19#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a1~0#1.base|) (+ |ULTIMATE.start_main_~#a1~0#1.offset| (* |ULTIMATE.start_main_~x~0#1| 4)))) (= |ULTIMATE.start_main_~#a8~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#a6~0#1.base|) (= |ULTIMATE.start_main_~#a7~0#1.offset| 0) (= |ULTIMATE.start_main_~#a4~0#1.offset| 0) (= |ULTIMATE.start_main_~x~0#1| 0) (<= 0 |#StackHeapBarrier|) (= (select (select |#memory_int| |ULTIMATE.start_main_~#a8~0#1.base|) (+ |ULTIMATE.start_main_~#a8~0#1.offset| (* |ULTIMATE.start_main_~x~0#1| 4))) |ULTIMATE.start_main_#t~mem20#1|) (= |#NULL.base| 0))' at error location [2022-12-14 04:43:16,556 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 04:43:16,557 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 04:43:16,557 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 101, 101] total 202 [2022-12-14 04:43:16,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748593445] [2022-12-14 04:43:16,557 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 04:43:16,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 203 states [2022-12-14 04:43:16,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:43:16,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 203 interpolants. [2022-12-14 04:43:16,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20523, Invalid=22533, Unknown=0, NotChecked=0, Total=43056 [2022-12-14 04:43:16,564 INFO L87 Difference]: Start difference. First operand 267 states and 275 transitions. Second operand has 203 states, 203 states have (on average 1.0886699507389161) internal successors, (221), 202 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:43:16,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:43:16,915 INFO L93 Difference]: Finished difference Result 534 states and 650 transitions. [2022-12-14 04:43:16,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 202 states. [2022-12-14 04:43:16,916 INFO L78 Accepts]: Start accepts. Automaton has has 203 states, 203 states have (on average 1.0886699507389161) internal successors, (221), 202 states have internal predecessors, (221), 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 265 [2022-12-14 04:43:16,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:43:16,918 INFO L225 Difference]: With dead ends: 534 [2022-12-14 04:43:16,918 INFO L226 Difference]: Without dead ends: 368 [2022-12-14 04:43:16,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 894 GetRequests, 665 SyntacticMatches, 23 SemanticMatches, 206 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8796 ImplicationChecksByTransitivity, 12.5s TimeCoverageRelationStatistics Valid=20523, Invalid=22533, Unknown=0, NotChecked=0, Total=43056 [2022-12-14 04:43:16,920 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 378 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 04:43:16,921 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 44 Invalid, 379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 378 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 04:43:16,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2022-12-14 04:43:16,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 368. [2022-12-14 04:43:16,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 367 states have (on average 1.0245231607629428) internal successors, (376), 367 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:43:16,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 376 transitions. [2022-12-14 04:43:16,930 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 376 transitions. Word has length 265 [2022-12-14 04:43:16,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:43:16,930 INFO L495 AbstractCegarLoop]: Abstraction has 368 states and 376 transitions. [2022-12-14 04:43:16,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 203 states, 203 states have (on average 1.0886699507389161) internal successors, (221), 202 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:43:16,930 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 376 transitions. [2022-12-14 04:43:16,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2022-12-14 04:43:16,934 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:43:16,934 INFO L195 NwaCegarLoop]: trace histogram [200, 22, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:43:16,944 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2dd60ac-6c63-4f37-a6f0-66ac3e67576e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-12-14 04:43:17,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2dd60ac-6c63-4f37-a6f0-66ac3e67576e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:43:17,135 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:43:17,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:43:17,135 INFO L85 PathProgramCache]: Analyzing trace with hash -989372524, now seen corresponding path program 10 times [2022-12-14 04:43:17,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:43:17,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931874136] [2022-12-14 04:43:17,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:43:17,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:43:17,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:43:38,965 INFO L134 CoverageAnalysis]: Checked inductivity of 21871 backedges. 0 proven. 20100 refuted. 0 times theorem prover too weak. 1771 trivial. 0 not checked. [2022-12-14 04:43:38,965 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:43:38,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931874136] [2022-12-14 04:43:38,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931874136] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 04:43:38,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [164321676] [2022-12-14 04:43:38,966 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-14 04:43:38,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:43:38,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2dd60ac-6c63-4f37-a6f0-66ac3e67576e/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 04:43:38,967 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2dd60ac-6c63-4f37-a6f0-66ac3e67576e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 04:43:38,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2dd60ac-6c63-4f37-a6f0-66ac3e67576e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-14 04:43:39,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:43:39,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 4675 conjuncts, 202 conjunts are in the unsatisfiable core [2022-12-14 04:43:39,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:43:40,039 INFO L134 CoverageAnalysis]: Checked inductivity of 21871 backedges. 0 proven. 20100 refuted. 0 times theorem prover too weak. 1771 trivial. 0 not checked. [2022-12-14 04:43:40,040 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 04:44:09,518 INFO L134 CoverageAnalysis]: Checked inductivity of 21871 backedges. 0 proven. 20100 refuted. 0 times theorem prover too weak. 1771 trivial. 0 not checked. [2022-12-14 04:44:09,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [164321676] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 04:44:09,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [624551503] [2022-12-14 04:44:09,519 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-12-14 04:44:09,519 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 04:44:09,519 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 04:44:09,519 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 04:44:09,519 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 04:44:09,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:44:09,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:44:09,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:44:09,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:44:09,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:44:09,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:44:09,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:44:09,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:44:09,751 INFO L321 Elim1Store]: treesize reduction 703, result has 8.6 percent of original size [2022-12-14 04:44:09,751 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 17 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 8 case distinctions, treesize of input 38 treesize of output 82 [2022-12-14 04:44:09,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:44:09,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:44:09,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:44:09,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:44:09,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:44:09,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:44:09,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:44:09,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:44:10,090 INFO L321 Elim1Store]: treesize reduction 984, result has 6.9 percent of original size [2022-12-14 04:44:10,090 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 11 select indices, 11 select index equivalence classes, 19 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 51 case distinctions, treesize of input 195 treesize of output 233 [2022-12-14 04:44:10,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:44:10,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:44:10,171 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 20 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 35 [2022-12-14 04:44:10,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:44:10,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:44:10,387 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:44:10,388 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:44:10,388 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:44:10,439 INFO L321 Elim1Store]: treesize reduction 235, result has 16.4 percent of original size [2022-12-14 04:44:10,439 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 788 treesize of output 778 [2022-12-14 04:44:11,351 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:44:11,361 INFO L321 Elim1Store]: treesize reduction 18, result has 47.1 percent of original size [2022-12-14 04:44:11,361 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 29 [2022-12-14 04:44:11,381 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:44:11,389 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 04:44:11,389 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 04:44:11,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:44:11,418 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:44:11,418 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:44:11,428 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 04:44:11,428 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 116 treesize of output 121 [2022-12-14 04:44:11,457 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:44:11,465 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 04:44:11,465 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 04:44:11,486 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 04:44:11,486 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 04:44:11,515 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:44:11,516 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:44:11,547 INFO L321 Elim1Store]: treesize reduction 99, result has 29.3 percent of original size [2022-12-14 04:44:11,547 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 106 treesize of output 125 [2022-12-14 04:44:11,583 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:44:11,589 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 04:44:11,589 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 04:44:11,602 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:44:11,607 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 04:44:11,607 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 04:44:11,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:44:11,633 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:44:11,633 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:44:11,642 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 04:44:11,642 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 116 treesize of output 121 [2022-12-14 04:44:11,665 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:44:11,670 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 04:44:11,670 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 04:44:11,681 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:44:11,689 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 04:44:11,689 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 04:44:11,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:44:11,713 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:44:11,714 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:44:11,723 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 04:44:11,723 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 116 treesize of output 121 [2022-12-14 04:44:11,755 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:44:11,762 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 04:44:11,763 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 04:44:11,794 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:44:11,800 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 04:44:11,800 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 04:44:11,823 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:44:11,824 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:44:11,831 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 04:44:11,831 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 116 treesize of output 121 [2022-12-14 04:44:11,858 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:44:11,866 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 04:44:11,866 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 04:44:11,877 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:44:11,886 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 04:44:11,886 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 04:44:11,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:44:11,913 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:44:11,913 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:44:11,923 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 04:44:11,923 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 116 treesize of output 121 [2022-12-14 04:44:11,983 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:44:11,991 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 04:44:11,992 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 04:44:12,020 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 04:44:12,021 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 04:44:12,044 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:44:12,045 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:44:12,065 INFO L321 Elim1Store]: treesize reduction 99, result has 29.3 percent of original size [2022-12-14 04:44:12,065 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 106 treesize of output 125 [2022-12-14 04:44:12,105 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:44:12,113 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 04:44:12,114 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 04:44:12,125 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 04:44:21,326 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '14637#(and (<= 0 |ULTIMATE.start_main_~#a4~0#1.base|) (= |ULTIMATE.start_main_~#a5~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a1~0#1.base|) (<= 100000 |ULTIMATE.start_main_~i~0#1|) (= (ite (= |ULTIMATE.start_main_#t~mem19#1| |ULTIMATE.start_main_#t~mem20#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start_main_~#a3~0#1.offset| 0) (<= 100000 |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_main_~#a1~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a7~0#1.base|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_main_~#a2~0#1.base|) (= |ULTIMATE.start_main_~#a6~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a3~0#1.base|) (<= 0 |ULTIMATE.start_main_~#a8~0#1.base|) (<= 0 |ULTIMATE.start_main_~#a5~0#1.base|) (= |ULTIMATE.start_main_~#a2~0#1.offset| 0) (= |ULTIMATE.start_main_#t~mem19#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a1~0#1.base|) (+ |ULTIMATE.start_main_~#a1~0#1.offset| (* |ULTIMATE.start_main_~x~0#1| 4)))) (= |ULTIMATE.start_main_~#a8~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#a6~0#1.base|) (= |ULTIMATE.start_main_~#a7~0#1.offset| 0) (= |ULTIMATE.start_main_~#a4~0#1.offset| 0) (= |ULTIMATE.start_main_~x~0#1| 0) (<= 0 |#StackHeapBarrier|) (= (select (select |#memory_int| |ULTIMATE.start_main_~#a8~0#1.base|) (+ |ULTIMATE.start_main_~#a8~0#1.offset| (* |ULTIMATE.start_main_~x~0#1| 4))) |ULTIMATE.start_main_#t~mem20#1|) (= |#NULL.base| 0))' at error location [2022-12-14 04:44:21,326 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 04:44:21,326 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 04:44:21,326 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [202, 202, 202] total 404 [2022-12-14 04:44:21,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101142558] [2022-12-14 04:44:21,327 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 04:44:21,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 405 states [2022-12-14 04:44:21,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:44:21,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 405 interpolants. [2022-12-14 04:44:21,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81830, Invalid=85860, Unknown=0, NotChecked=0, Total=167690 [2022-12-14 04:44:21,350 INFO L87 Difference]: Start difference. First operand 368 states and 376 transitions. Second operand has 405 states, 405 states have (on average 1.0444444444444445) internal successors, (423), 404 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:44:23,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:44:23,224 INFO L93 Difference]: Finished difference Result 736 states and 953 transitions. [2022-12-14 04:44:23,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 404 states. [2022-12-14 04:44:23,224 INFO L78 Accepts]: Start accepts. Automaton has has 405 states, 405 states have (on average 1.0444444444444445) internal successors, (423), 404 states have internal predecessors, (423), 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 366 [2022-12-14 04:44:23,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:44:23,226 INFO L225 Difference]: With dead ends: 736 [2022-12-14 04:44:23,226 INFO L226 Difference]: Without dead ends: 570 [2022-12-14 04:44:23,232 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1298 GetRequests, 844 SyntacticMatches, 46 SemanticMatches, 408 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31553 ImplicationChecksByTransitivity, 47.7s TimeCoverageRelationStatistics Valid=81830, Invalid=85860, Unknown=0, NotChecked=0, Total=167690 [2022-12-14 04:44:23,232 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 533 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 04:44:23,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 32 Invalid, 534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 533 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 04:44:23,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2022-12-14 04:44:23,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 570. [2022-12-14 04:44:23,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 569 states have (on average 1.015817223198594) internal successors, (578), 569 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:44:23,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 578 transitions. [2022-12-14 04:44:23,246 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 578 transitions. Word has length 366 [2022-12-14 04:44:23,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:44:23,246 INFO L495 AbstractCegarLoop]: Abstraction has 570 states and 578 transitions. [2022-12-14 04:44:23,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 405 states, 405 states have (on average 1.0444444444444445) internal successors, (423), 404 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:44:23,246 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 578 transitions. [2022-12-14 04:44:23,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 569 [2022-12-14 04:44:23,248 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:44:23,248 INFO L195 NwaCegarLoop]: trace histogram [402, 22, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:44:23,259 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2dd60ac-6c63-4f37-a6f0-66ac3e67576e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-12-14 04:44:23,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2dd60ac-6c63-4f37-a6f0-66ac3e67576e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:44:23,450 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:44:23,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:44:23,451 INFO L85 PathProgramCache]: Analyzing trace with hash 2083508500, now seen corresponding path program 11 times [2022-12-14 04:44:23,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:44:23,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400990815] [2022-12-14 04:44:23,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:44:23,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:44:24,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:45:55,761 INFO L134 CoverageAnalysis]: Checked inductivity of 82774 backedges. 0 proven. 81003 refuted. 0 times theorem prover too weak. 1771 trivial. 0 not checked. [2022-12-14 04:45:55,762 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:45:55,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400990815] [2022-12-14 04:45:55,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400990815] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 04:45:55,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1057311675] [2022-12-14 04:45:55,762 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 04:45:55,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:45:55,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2dd60ac-6c63-4f37-a6f0-66ac3e67576e/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 04:45:55,763 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2dd60ac-6c63-4f37-a6f0-66ac3e67576e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 04:45:55,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2dd60ac-6c63-4f37-a6f0-66ac3e67576e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process